diff --git a/CHANGELOG b/CHANGELOG
index 50b75944c8..f900d2ba11 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Remove Property field
+* Add MultiValueMixin and ValueMixin
 * Use sql type in column creation
 * Use generic SQL type in field and let backend determine the SQLType
 * Add filter to xxx2Many fields
diff --git a/doc/ref/models/fields.rst b/doc/ref/models/fields.rst
index 754ec470c1..7b3ceca575 100644
--- a/doc/ref/models/fields.rst
+++ b/doc/ref/models/fields.rst
@@ -819,29 +819,25 @@ Instance methods:
     :class:`~trytond.model.Model` instance of the field, `name` is the name of
     the field, `clause` is a clause of :ref:`domain <topics-domain>`.
 
-Property
---------
+MultiValue
+----------
 
-.. class:: Property(field)
+.. class:: MultiValue(field)
 
-A property field that is like a :class:`Function` field but with predifined
-:attr:`~Function.getter`, :attr:`~Function.setter` and
-:attr:`~Function.searcher` that use the :class:`~trytond.model.ModelSQL`
-`ir.property` to store values.
+A multivalue field that is like a :class:`Function` field but with predefined
+:attr:`~Function.getter` and :attr:`~Function.setter` that use the
+:class:`~trytond.model.MultiValueMixin` for stored values.
 
-Instance methods:
+.. warning::
+    The :meth:`~trytond.model.MultiValueMixin.get_multivalue` and
+    :meth:`~trytond.model.MultiValueMixin.set_multivalue` should be prefered
+    over the descriptors of the field.
+..
 
-.. method:: Property.get(ids, model, name[, values])
-
-    Same as :meth:`Function.get`.
-
-.. method:: Property.set(ids, model, name, value)
-
-    Same as :meth:`Function.set`.
-
-.. method:: Property.search(model, name, clause)
-
-    Same as :meth:`Function.search`.
+.. warning::
+    The :ref:`default <topics-fields_default_value>` method of the field must
+    accept pattern as keyword argument.
+..
 
 Dict
 ----
diff --git a/doc/ref/models/models.rst b/doc/ref/models/models.rst
index b8672a323f..5f59d166d5 100644
--- a/doc/ref/models/models.rst
+++ b/doc/ref/models/models.rst
@@ -647,9 +647,10 @@ record is equal or not defined.
 
 Instance methods:
 
-.. method:: MatchMixin.match(pattern)
+.. method:: MatchMixin.match(pattern[, match_none])
 
-    Return if the instance match the pattern
+    Return if the instance match the pattern. If `match_none` is set `None`
+    value of the instance will be compared.
 
 ==========
 UnionMixin
@@ -697,6 +698,60 @@ the field to be created and its default values is `sequence`. field_label
 defines the label which will be used by the field and defaults to `Sequence`.
 Order specifies the order direction and defaults to `ASC NULLS FIRST`.
 
+===============
+MultiValueMixin
+===============
+
+.. class:: MultiValueMixin
+
+A mixin_ for :class:`Model` to help having
+:class:`trytond.model.fields.MultiValue` fields with multi-values on a
+:class:`ValueMixin`. The values are stored by creating one record per pattern.
+The patterns are the same as those on :class:`MatchMixin`.
+
+Class methods:
+
+.. classmethod:: MultiValueMixin.multivalue_model(field)
+
+    Return the :class:`ValueMixin` on which the values are stored for the
+    field name. The default is class name suffixed by the field name.
+
+.. classmethod:: MultiValueMixin.setter_multivalue(records, name, value, \*\*pattern)
+
+    The setter method for the :class:`trytond.model.fields.Function` fields.
+
+Instance methods:
+
+.. method:: MultiValueMixin.multivalue_records(field)
+
+    Return the list of all :class:`ValueMixin` records linked to the instance.
+    By default, it returns the value of the first found
+    :class:`trytond.model.fields.One2Many` linked to the multivalue model or
+    all the records of this one.
+
+.. method:: MultiValueMixin.multivalue_record(field, \*\*pattern)
+
+    Return a new record of :class:`ValueMixin` linked to the instance.
+
+.. method:: MultiValueMixin.get_multivalue(name, \*\*pattern)
+
+    Return the value of the field `name` for the pattern.
+
+.. method:: MultiValueMixin.set_multivalue(name, value, \*\*pattern)
+
+    Store the value of the field `name` for the pattern.
+
+.. warning::
+    To customize the pattern, both methods must be override the same way.
+..
+
+==========
+ValueMixin
+==========
+
+.. class:: ValueMixin
+
+A mixin_ to store the values of :class:`MultiValueMixin`.
 
 .. _mixin: http://en.wikipedia.org/wiki/Mixin
 .. _JSON: http://en.wikipedia.org/wiki/Json
diff --git a/trytond/ir/__init__.py b/trytond/ir/__init__.py
index b4a8ff47e6..1e0a5aedc1 100644
--- a/trytond/ir/__init__.py
+++ b/trytond/ir/__init__.py
@@ -7,7 +7,6 @@ from .sequence import *
 from .ui.menu import *
 from .ui.view import *
 from .ui.icon import *
-from .property import *
 from .action import *
 from .model import *
 from .attachment import *
@@ -45,7 +44,6 @@ def register():
         ViewTreeState,
         ViewSearch,
         Icon,
-        Property,
         Action,
         ActionKeyword,
         ActionReport,
diff --git a/trytond/ir/model.py b/trytond/ir/model.py
index c43e1afa7a..6b074fd0b8 100644
--- a/trytond/ir/model.py
+++ b/trytond/ir/model.py
@@ -77,8 +77,6 @@ class Model(ModelSQL, ModelView):
 
     @classmethod
     def register(cls, model, module_name):
-        pool = Pool()
-        Property = pool.get('ir.property')
         cursor = Transaction().connection.cursor()
 
         ir_model = cls.__table__()
@@ -97,7 +95,6 @@ class Model(ModelSQL, ModelView):
                         ir_model.module],
                     [[model.__name__, model._get_name(), model.__doc__,
                             module_name]]))
-            Property._models_get_cache.clear()
             cursor.execute(*ir_model.select(ir_model.id,
                     where=ir_model.model == model.__name__))
             (model_id,) = cursor.fetchone()
@@ -124,31 +121,6 @@ class Model(ModelSQL, ModelView):
         return [name for name, model in Pool().iterobject()
             if getattr(model, '_history', False)]
 
-    @classmethod
-    def create(cls, vlist):
-        pool = Pool()
-        Property = pool.get('ir.property')
-        res = super(Model, cls).create(vlist)
-        # Restart the cache of models_get
-        Property._models_get_cache.clear()
-        return res
-
-    @classmethod
-    def write(cls, models, values, *args):
-        pool = Pool()
-        Property = pool.get('ir.property')
-        super(Model, cls).write(models, values, *args)
-        # Restart the cache of models_get
-        Property._models_get_cache.clear()
-
-    @classmethod
-    def delete(cls, models):
-        pool = Pool()
-        Property = pool.get('ir.property')
-        super(Model, cls).delete(models)
-        # Restart the cache of models_get
-        Property._models_get_cache.clear()
-
     @classmethod
     def global_search(cls, text, limit, menu='ir.ui.menu'):
         """
diff --git a/trytond/ir/property.py b/trytond/ir/property.py
deleted file mode 100644
index ead53e92ea..0000000000
--- a/trytond/ir/property.py
+++ /dev/null
@@ -1,173 +0,0 @@
-# This file is part of Tryton.  The COPYRIGHT file at the top level of
-# this repository contains the full copyright notices and license terms.
-from decimal import Decimal
-from ..model import ModelView, ModelSQL, fields
-from ..transaction import Transaction
-from ..cache import Cache
-from ..pool import Pool
-
-__all__ = [
-    'Property',
-    ]
-
-_CAST = {
-    'numeric': Decimal,
-    'integer': int,
-    'float': float,
-    }
-
-
-class Property(ModelSQL, ModelView):
-    "Property"
-    __name__ = 'ir.property'
-    _rec_name = 'field'
-    value = fields.Reference('Value', selection='models_get')
-    res = fields.Reference('Resource', selection='models_get', select=True)
-    field = fields.Many2One('ir.model.field', 'Field',
-        ondelete='CASCADE', required=True, select=True)
-    _models_get_cache = Cache('ir_property.models_get', context=False)
-
-    @classmethod
-    def models_get(cls):
-        pool = Pool()
-        Model = pool.get('ir.model')
-        models = cls._models_get_cache.get(None)
-        if models:
-            return models
-        cursor = Transaction().connection.cursor()
-        model = Model.__table__()
-        cursor.execute(*model.select(model.model, model.name,
-                order_by=model.name.asc))
-        models = cursor.fetchall() + [('', '')]
-        cls._models_get_cache.set(None, models)
-        return models
-
-    @classmethod
-    def get(cls, names, model, res_ids=None):
-        """
-        Return named property values for each res_ids of model
-        """
-        pool = Pool()
-        ModelAccess = pool.get('ir.model.access')
-        res = {}
-
-        ModelAccess.check(model, 'read')
-
-        names_list = True
-        if not isinstance(names, list):
-            names_list = False
-            names = [names]
-        if res_ids is None:
-            res_ids = []
-
-        properties = cls.search([
-            ('field.name', 'in', names),
-            ['OR',
-                ('res', '=', None),
-                ('res', 'in', ['%s,%s' % (model, x) for x in res_ids]),
-                ],
-            ], order=[])
-
-        default_vals = dict((x, None) for x in names)
-        for property_ in (x for x in properties if not x.res):
-            value = property_.value
-            val = None
-            if value is not None:
-                if not isinstance(value, basestring):
-                    val = int(value)
-                else:
-                    if property_.field.ttype in _CAST:
-                        cast = _CAST[property_.field.ttype]
-                        val = cast(value.split(',')[1])
-                    elif property_.field.ttype in ('char', 'selection'):
-                        val = value.split(',')[1]
-                    else:
-                        raise Exception('Not implemented')
-            default_vals[property_.field.name] = val
-
-        if not res_ids:
-            if not names_list:
-                return default_vals[names[0]]
-            return default_vals
-
-        for name in names:
-            res[name] = dict((x, default_vals[name]) for x in res_ids)
-
-        for property_ in (x for x in properties if x.res):
-            val = None
-            if property_.value is not None:
-                if not isinstance(property_.value, basestring):
-                    val = int(property_.value)
-                else:
-                    if property_.field.ttype in _CAST:
-                        cast = _CAST[property_.field.ttype]
-                        val = cast(property_.value.split(',')[1])
-                    elif property_.field.ttype in ('char', 'selection'):
-                        val = property_.value.split(',')[1]
-                    else:
-                        raise Exception('Not implemented')
-            res[property_.field.name][int(property_.res)] = val
-
-        if not names_list:
-            return res[names[0]]
-        return res
-
-    @staticmethod
-    def _set_values(model, res_id, val, field_id):
-        return {
-            'value': val,
-            'res': model + ',' + str(res_id),
-            'field': field_id,
-        }
-
-    @classmethod
-    def set(cls, name, model, ids, val):
-        """
-        Set named property value for ids of model
-        Return the id of the record created
-        """
-        pool = Pool()
-        ModelField = pool.get('ir.model.field')
-        ModelAccess = pool.get('ir.model.access')
-
-        ModelAccess.check(model, 'write')
-
-        model_field, = ModelField.search([
-            ('name', '=', name),
-            ('model.model', '=', model),
-            ], order=[], limit=1)
-        Model = pool.get(model)
-        field = Model._fields[name]
-
-        properties = cls.search([
-            ('field', '=', model_field.id),
-            ('res', 'in', [model + ',' + str(res_id) for res_id in ids]),
-            ], order=[])
-        cls.delete(properties)
-
-        defaults = cls.search([
-            ('field', '=', model_field.id),
-            ('res', '=', None),
-            ], order=[], limit=1)
-        default_val = None
-        if defaults:
-            value = cls(defaults[0].id).value
-            default_val = None
-            if value is not None:
-                if not isinstance(value, basestring):
-                    default_val = int(value)
-                else:
-                    if field._type in _CAST:
-                        cast = _CAST[field._type]
-                        default_val = cast(value.split(',')[1])
-                    elif field._type in ('char', 'selection'):
-                        default_val = value.split(',')[1]
-                    else:
-                        raise Exception('Not implemented')
-
-        if (val != default_val):
-            to_create = []
-            for res_id in ids:
-                vals = cls._set_values(model, res_id, val, model_field.id)
-                to_create.append(vals)
-            cls.create(to_create)
diff --git a/trytond/ir/property.xml b/trytond/ir/property.xml
deleted file mode 100644
index 2ea792e1be..0000000000
--- a/trytond/ir/property.xml
+++ /dev/null
@@ -1,56 +0,0 @@
-<?xml version="1.0"?>
-<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
-this repository contains the full copyright notices and license terms. -->
-<tryton>
-    <data>
-        <record model="ir.ui.view" id="property_view_form">
-            <field name="model">ir.property</field>
-            <field name="type">form</field>
-            <field name="name">property_form</field>
-        </record>
-        <record model="ir.ui.view" id="property_view_tree">
-            <field name="model">ir.property</field>
-            <field name="type">tree</field>
-            <field name="name">property_list</field>
-        </record>
-        <record model="ir.action.act_window" id="act_property_form_default">
-            <field name="name">Default Properties</field>
-            <field name="type">ir.action.act_window</field>
-            <field name="res_model">ir.property</field>
-            <field name="domain" eval="[('res', '=', None)]" pyson="1"/>
-        </record>
-        <record model="ir.action.act_window.view"
-            id="act_property_form_view1_default">
-            <field name="sequence" eval="1"/>
-            <field name="view" ref="property_view_tree"/>
-            <field name="act_window" ref="act_property_form_default"/>
-        </record>
-        <record model="ir.action.act_window.view"
-            id="act_property_form_view2_default">
-            <field name="sequence" eval="2"/>
-            <field name="view" ref="property_view_form"/>
-            <field name="act_window" ref="act_property_form_default"/>
-        </record>
-        <menuitem parent="ir.menu_models"
-            action="act_property_form_default" id="menu_property_form_default"/>
-        <record model="ir.action.act_window" id="act_property_form">
-            <field name="name">Properties</field>
-            <field name="type">ir.action.act_window</field>
-            <field name="res_model">ir.property</field>
-        </record>
-        <record model="ir.action.act_window.view"
-            id="act_property_form_view1">
-            <field name="sequence" eval="1"/>
-            <field name="view" ref="property_view_tree"/>
-            <field name="act_window" ref="act_property_form"/>
-        </record>
-        <record model="ir.action.act_window.view"
-            id="act_property_form_view2">
-            <field name="sequence" eval="2"/>
-            <field name="view" ref="property_view_form"/>
-            <field name="act_window" ref="act_property_form"/>
-        </record>
-        <menuitem parent="ir.menu_models"
-            action="act_property_form" id="menu_property_form"/>
-    </data>
-</tryton>
diff --git a/trytond/ir/tryton.cfg b/trytond/ir/tryton.cfg
index 152b3e1e20..446f50c052 100644
--- a/trytond/ir/tryton.cfg
+++ b/trytond/ir/tryton.cfg
@@ -15,6 +15,5 @@ xml:
     translation.xml
     export.xml
     rule.xml
-    property.xml
     module.xml
     trigger.xml
diff --git a/trytond/ir/view/property_form.xml b/trytond/ir/view/property_form.xml
deleted file mode 100644
index 5a760c3f0c..0000000000
--- a/trytond/ir/view/property_form.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0"?>
-<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
-this repository contains the full copyright notices and license terms. -->
-<form>
-    <label name="field"/>
-    <field name="field" colspan="3"/>
-    <label name="value"/>
-    <field name="value" colspan="3"/>
-    <label name="res"/>
-    <field name="res" colspan="3"/>
-</form>
diff --git a/trytond/ir/view/property_list.xml b/trytond/ir/view/property_list.xml
deleted file mode 100644
index 770d34e62d..0000000000
--- a/trytond/ir/view/property_list.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0"?>
-<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
-this repository contains the full copyright notices and license terms. -->
-<tree>
-    <field name="field"/>
-    <field name="value"/>
-    <field name="res"/>
-</tree>
diff --git a/trytond/model/__init__.py b/trytond/model/__init__.py
index a551e51ca1..ed741953e2 100644
--- a/trytond/model/__init__.py
+++ b/trytond/model/__init__.py
@@ -9,10 +9,12 @@ from .workflow import Workflow
 from .dictschema import DictSchemaMixin
 from .match import MatchMixin
 from .union import UnionMixin
+from .multivalue import MultiValueMixin, ValueMixin
 from .descriptors import dualmethod
 from .order import sequence_ordered
 
 __all__ = ['Model', 'ModelView', 'ModelStorage', 'ModelSingleton', 'ModelSQL',
     'Check', 'Unique',
     'Workflow', 'DictSchemaMixin', 'MatchMixin', 'UnionMixin', 'dualmethod',
+    'MultiValueMixin', 'ValueMixin',
     'EvalEnvironment', 'sequence_ordered']
diff --git a/trytond/model/fields/__init__.py b/trytond/model/fields/__init__.py
index bbb52c3855..a1a4ca4c26 100644
--- a/trytond/model/fields/__init__.py
+++ b/trytond/model/fields/__init__.py
@@ -16,6 +16,5 @@ from .many2one import *
 from .one2many import *
 from .many2many import *
 from .function import *
-from .property import *
 from .one2one import *
 from .dict import *
diff --git a/trytond/model/fields/function.py b/trytond/model/fields/function.py
index c0834bb517..fa80bb34f0 100644
--- a/trytond/model/fields/function.py
+++ b/trytond/model/fields/function.py
@@ -3,6 +3,7 @@
 
 import inspect
 import copy
+
 from trytond.model.fields.field import Field
 from trytond.tools import is_instance_method
 from trytond.transaction import Transaction
@@ -116,3 +117,18 @@ class Function(Field):
 
     def __set__(self, inst, value):
         self._field.__set__(inst, value)
+
+
+class MultiValue(Function):
+
+    def __init__(self, field, loading='lazy'):
+        super(MultiValue, self).__init__(
+            field, '_multivalue_getter', setter='_multivalue_setter',
+            loading=loading)
+
+    def __copy__(self):
+        return MultiValue(copy.copy(self._field), loading=self.loading)
+
+    def __deepcopy__(self, memo):
+        return MultiValue(
+            copy.deepcopy(self._field, memo), loading=self.loading)
diff --git a/trytond/model/fields/property.py b/trytond/model/fields/property.py
deleted file mode 100644
index e04da695d3..0000000000
--- a/trytond/model/fields/property.py
+++ /dev/null
@@ -1,183 +0,0 @@
-# This file is part of Tryton.  The COPYRIGHT file at the top level of
-# this repository contains the full copyright notices and license terms.
-import copy
-
-from sql import Cast, Literal, Null
-from sql.functions import Substring, Position
-from sql.conditionals import Case
-
-from .function import Function
-from .field import Field, SQL_OPERATORS
-from .numeric import Numeric
-from .integer import Integer
-from .float import Float
-from ...transaction import Transaction
-from ...pool import Pool
-
-
-class Property(Function):
-    '''
-    Define a property field that is stored in ir.property (any).
-    '''
-
-    def __init__(self, field):
-        '''
-        :param field: The field of the function.
-        '''
-        super(Property, self).__init__(field, True, True, True)
-
-    __init__.__doc__ += Field.__init__.__doc__
-
-    def __copy__(self):
-        return Property(copy.copy(self._field))
-
-    def __deepcopy__(self, memo):
-        return Property(copy.deepcopy(self._field))
-
-    def get(self, ids, model, name, values=None):
-        '''
-        Retreive the property.
-
-        :param ids: A list of ids.
-        :param model: The model.
-        :param name: The name of the field or a list of name field.
-        :param values:
-        :return: a dictionary with ids as key and values as value
-        '''
-        with Transaction().set_context(_check_access=False):
-            pool = Pool()
-            Property = pool.get('ir.property')
-            return Property.get(name, model.__name__, ids)
-
-    def set(self, Model, name, ids, value, *args):
-        '''
-        Set the property.
-        '''
-        with Transaction().set_context(_check_access=False):
-            pool = Pool()
-            Property = pool.get('ir.property')
-            args = iter((ids, value) + args)
-            for ids, value in zip(args, args):
-                if value is not None:
-                    prop_value = '%s,%s' % (getattr(self, 'model_name', ''),
-                        str(value))
-                else:
-                    prop_value = None
-                # TODO change set API to use sequence of records, value
-                Property.set(name, Model.__name__, ids, prop_value)
-
-    def convert_domain(self, domain, tables, Model):
-        pool = Pool()
-        Rule = pool.get('ir.rule')
-        Property = pool.get('ir.property')
-        IrModel = pool.get('ir.model')
-        Field = pool.get('ir.model.field')
-        cursor = Transaction().connection.cursor()
-
-        name, operator, value = domain
-
-        sql_type = self._field.sql_type().base
-
-        property_cond = Rule.query_get('ir.property')
-
-        property_ = Property.__table__()
-        model_field = Field.__table__()
-        model = IrModel.__table__()
-
-        # Fetch res ids that comply with the domain
-        join = property_.join(model_field,
-            condition=model_field.id == property_.field)
-        join = join.join(model,
-            condition=model.id == model_field.model)
-        cond = ((model.model == Model.__name__)
-            & (model_field.name == name))
-        if property_cond:
-            cond &= property_.id.in_(property_cond)
-        cursor.execute(*join.select(
-                Cast(Substring(property_.res,
-                        Position(',', property_.res) + Literal(1)),
-                    Model.id.sql_type().base),
-                property_.id,
-                # Use a Case because the condition created by get_condition
-                # could result in an invalid Cast
-                where=Case(
-                    (cond, self.get_condition(sql_type, domain, property_)),
-                    else_=(Literal(1) == Literal(0)))))
-
-        props = cursor.fetchall()
-        default = None
-        for prop in props:
-            if not prop[0]:
-                default = prop[1]
-                break
-
-        if (not default
-                or ((value is False or value is None)
-                    and operator in ['=', '!='])
-                or (operator in ['not like', 'not ilike', 'not in', '!='])):
-            dom_operator = 'in'  # default operator
-            if (((value is False or value is None) and operator == '=')
-                    or ((value is not False and value is not None)
-                        and operator in [
-                            'not like', 'not ilike', 'not in', '!='])):
-                dom_operator = 'not in'
-            return [('id', dom_operator, [x[0] for x in props])]
-
-        # Fetch the res ids that doesn't use the default value
-        cursor.execute(*property_.select(
-                Cast(Substring(property_.res,
-                        Position(',', property_.res) + Literal(1)),
-                    Model.id.sql_type().base),
-                where=property_cond & (property_.res != Null)))
-
-        fetchall = cursor.fetchall()
-        if not fetchall:
-            return [('id', 'in', [x[0] for x in props])]
-
-        else:
-            other_ids = [x[0] for x in fetchall]
-
-            res_ids = Model.search(['OR',
-                ('id', 'in', [x[0] for x in props]),
-                ('id', 'not in', other_ids)
-                ])
-
-            return [('id', 'in', res_ids)]
-
-    @staticmethod
-    def get_condition(sql_type, clause, table):
-        operator = clause[1]
-        value = clause[2]
-
-        sql_types = [
-            Numeric('numeric').sql_type().base,
-            Integer('integer').sql_type().base,
-            Float('float').sql_type().base,
-            ]
-        if sql_type in sql_types and value:
-            if isinstance(value, (list, tuple)):
-                value = [Cast(v, sql_type) for v in value]
-            else:
-                value = Cast(value, sql_type)
-
-        if value is None:
-            value = False
-
-        column = Cast(Substring(table.value,
-                Position(',', table.value) + Literal(1)),
-            sql_type)
-        Operator = SQL_OPERATORS[operator]
-
-        # All negative clauses will be negated later
-        if operator in ('in', 'not in'):
-            return column.in_(value)
-        elif ((value is False or value is None)
-                and operator in ('=', '!=')):
-            return column != Null
-        elif operator == 'not like':
-            return column.like(value)
-        elif operator == 'not ilike':
-            return column.ilike(value)
-        elif operator == '!=':
-            return column == value
-        return Operator(column, value)
diff --git a/trytond/model/match.py b/trytond/model/match.py
index cb82f1984e..f4e7f89988 100644
--- a/trytond/model/match.py
+++ b/trytond/model/match.py
@@ -4,16 +4,16 @@
 
 class MatchMixin(object):
 
-    def match(self, pattern):
+    def match(self, pattern, match_none=False):
         '''Match on pattern
         pattern is a dictionary with model field as key
         and matching value as value'''
         for field, pattern_value in pattern.iteritems():
             value = getattr(self, field)
-            if value is None:
+            if not match_none and value is None:
                 continue
             if self._fields[field]._type == 'many2one':
-                value = value.id
+                value = value.id if value else value
             if value != pattern_value:
                 return False
         return True
diff --git a/trytond/model/model.py b/trytond/model/model.py
index 45e32581c2..1e4c67b3f4 100644
--- a/trytond/model/model.py
+++ b/trytond/model/model.py
@@ -123,7 +123,6 @@ class Model(WarningErrorMixin, URLMixin, PoolBase):
         If with_rec_name is True, rec_name will be added.
         '''
         pool = Pool()
-        Property = pool.get('ir.property')
         value = {}
 
         default_rec_name = Transaction().context.get('default_rec_name')
@@ -140,8 +139,6 @@ class Model(WarningErrorMixin, URLMixin, PoolBase):
             if (field._type == 'boolean'
                     and field_name not in value):
                 value[field_name] = False
-            if isinstance(field, fields.Property):
-                value[field_name] = Property.get(field_name, cls.__name__)
             if (with_rec_name
                     and field._type in ('many2one',)
                     and value.get(field_name)):
@@ -243,10 +240,7 @@ class Model(WarningErrorMixin, URLMixin, PoolBase):
             if ((isinstance(cls._fields[field], fields.Function)
                         and not (cls._fields[field].searcher
                             or getattr(cls, 'domain_%s' % field, None)))
-                    or (cls._fields[field]._type in ('binary', 'sha'))
-                    or (isinstance(cls._fields[field], fields.Property)
-                        and isinstance(cls._fields[field]._field,
-                            fields.Many2One))):
+                    or (cls._fields[field]._type in ('binary', 'sha'))):
                 res[field]['searchable'] = False
             else:
                 res[field]['searchable'] = True
diff --git a/trytond/model/modelstorage.py b/trytond/model/modelstorage.py
index 59e829f482..e1bcc7df53 100644
--- a/trytond/model/modelstorage.py
+++ b/trytond/model/modelstorage.py
@@ -286,8 +286,8 @@ class ModelStorage(Model):
                 if field_name in default:
                     data[field_name] = default[field_name]
                 elif (isinstance(cls._fields[field_name], fields.Function)
-                        and not isinstance(cls._fields[field_name],
-                            fields.Property)):
+                        and not isinstance(
+                            cls._fields[field_name], fields.MultiValue)):
                     del data[field_name]
                 elif ftype in ('many2one', 'one2one'):
                     try:
@@ -315,7 +315,7 @@ class ModelStorage(Model):
                 mptt.add(field.right)
         fields_names = [n for n, f in cls._fields.iteritems()
             if (not isinstance(f, fields.Function)
-                or isinstance(f, fields.Property))
+                or isinstance(f, fields.MultiValue))
             and n not in mptt]
         ids = map(int, records)
         datas = cls.read(ids, fields_names=fields_names)
diff --git a/trytond/model/multivalue.py b/trytond/model/multivalue.py
new file mode 100644
index 0000000000..f3d7e60356
--- /dev/null
+++ b/trytond/model/multivalue.py
@@ -0,0 +1,87 @@
+# This file is part of Tryton.  The COPYRIGHT file at the toplevel of this
+# repository contains the full copyright notices and license terms.
+from ..pool import Pool
+from .model import Model
+from .match import MatchMixin
+
+
+class MultiValueMixin(object):
+
+    @classmethod
+    def multivalue_model(cls, field):
+        pool = Pool()
+        Value = pool.get('%s.%s' % (cls.__name__, field))
+        assert issubclass(Value, ValueMixin), (
+            "%s is not a subclass of ValueMixin" % Value)
+        return Value
+
+    def multivalue_records(self, field):
+        Value = self.multivalue_model(field)
+        for fname, field in self._fields.iteritems():
+            if (field._type == 'one2many'
+                    and field.model_name == Value.__name__):
+                return getattr(self, fname)
+        return Value.search([])
+
+    def multivalue_record(self, field, **pattern):
+        Value = self.multivalue_model(field)
+        for fname, field in Value._fields.iteritems():
+            if (field._type == 'many2one'
+                    and field.model_name == self.__name__):
+                pattern = pattern.copy()
+                pattern[fname] = self
+                break
+        return Value(**pattern)
+
+    def __values(self, field, pattern, match_none=True):
+        return [v for v in self.multivalue_records(field)
+            if v.match(pattern, match_none=match_none)]
+
+    def get_multivalue(self, name, **pattern):
+        values = self.__values(name, pattern, match_none=False)
+        if not values:
+            Value = self.multivalue_model(name)
+            value = Value(**pattern)
+            func = getattr(self, 'default_%s' % name, lambda **kw: None)
+            setattr(value, name, func(**pattern))
+        else:
+            value = values[0]
+        return getattr(value, name)
+
+    def _multivalue_getter(self, name):
+        Value = self.multivalue_model(name)
+        value = self.get_multivalue(name)
+        if isinstance(value, Model):
+            if Value._fields[name]._type == 'reference':
+                return str(value)
+            return value.id
+        elif isinstance(value, (list, tuple)):
+            return [r.id for r in value]
+        else:
+            return value
+
+    def set_multivalue(self, name, value, _save=True, **pattern):
+        Value = self.multivalue_model(name)
+        values = self.__values(name, pattern, match_none=True)
+        if not values:
+            values = [self.multivalue_record(name, **pattern)]
+        for record in values:
+            setattr(record, name, value)
+        if _save:
+            Value.save(values)
+        else:
+            return values
+
+    @classmethod
+    def _multivalue_setter(cls, records, name, val):
+        Value = cls.multivalue_model(name)
+        to_save = []
+        for record in records:
+            to_save.extend(record.set_multivalue(name, val, _save=False))
+        Value.save(to_save)
+
+
+class ValueMixin(MatchMixin):
+
+    def match(self, pattern, match_none=True):
+        return super(ValueMixin, self).match(pattern, match_none=match_none)
diff --git a/trytond/res/ir.xml b/trytond/res/ir.xml
index f71002bc86..dabe6bdc60 100644
--- a/trytond/res/ir.xml
+++ b/trytond/res/ir.xml
@@ -371,21 +371,6 @@ this repository contains the full copyright notices and license terms. -->
             <field name="perm_create" eval="True"/>
             <field name="perm_delete" eval="True"/>
         </record>
-        <record model="ir.model.access" id="access_ir_property">
-            <field name="model" search="[('model', '=', 'ir.property')]"/>
-            <field name="perm_read" eval="True"/>
-            <field name="perm_write" eval="False"/>
-            <field name="perm_create" eval="False"/>
-            <field name="perm_delete" eval="False"/>
-        </record>
-        <record model="ir.model.access" id="access_ir_property_admin">
-            <field name="model" search="[('model', '=', 'ir.property')]"/>
-            <field name="group" ref="group_admin"/>
-            <field name="perm_read" eval="True"/>
-            <field name="perm_write" eval="True"/>
-            <field name="perm_create" eval="True"/>
-            <field name="perm_delete" eval="True"/>
-        </record>
         <record model="ir.model.access" id="access_ir_module">
             <field name="model" search="[('model', '=', 'ir.module')]"/>
             <field name="perm_read" eval="True"/>
@@ -694,14 +679,6 @@ this repository contains the full copyright notices and license terms. -->
             <field name="menu" ref="ir.menu_rule_group_form"/>
             <field name="group" ref="group_admin"/>
         </record>
-        <record model="ir.ui.menu-res.group" id="menu_property_form_default_group_admin">
-            <field name="menu" ref="ir.menu_property_form_default"/>
-            <field name="group" ref="group_admin"/>
-        </record>
-        <record model="ir.ui.menu-res.group" id="menu_property_form_group_admin">
-            <field name="menu" ref="ir.menu_property_form"/>
-            <field name="group" ref="group_admin"/>
-        </record>
         <record model="ir.ui.menu-res.group" id="menu_modules_group_admin">
             <field name="menu" ref="ir.menu_modules"/>
             <field name="group" ref="group_admin"/>
diff --git a/trytond/tests/__init__.py b/trytond/tests/__init__.py
index 08f48ce126..50c69ae7aa 100644
--- a/trytond/tests/__init__.py
+++ b/trytond/tests/__init__.py
@@ -15,6 +15,7 @@ from .workflow import *
 from .copy_ import *
 from history import *
 from .field_context import *
+from . import multivalue
 
 
 def register():
@@ -101,7 +102,6 @@ def register():
         Reference,
         ReferenceTarget,
         ReferenceRequired,
-        Property,
         Selection,
         SelectionRequired,
         DictSchema,
@@ -194,6 +194,8 @@ def register():
         TestWizard,
         module='tests', type_='wizard')
 
+    multivalue.register('tests')
+
 
 def suite():
     from .test_tryton import all_suite
diff --git a/trytond/tests/multivalue.py b/trytond/tests/multivalue.py
new file mode 100644
index 0000000000..45fb386309
--- /dev/null
+++ b/trytond/tests/multivalue.py
@@ -0,0 +1,32 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import ModelSQL, MultiValueMixin, ValueMixin, fields
+from trytond.pool import Pool
+
+
+class ModelMultiValue(ModelSQL, MultiValueMixin):
+    "Model MultiValue"
+    __name__ = 'test.model_multivalue'
+    value = fields.MultiValue(fields.Char("Value"))
+    values = fields.One2Many(
+        'test.model_multivalue.value', 'record', "Values")
+
+    @classmethod
+    def default_value(cls, **pattern):
+        return "default"
+
+
+class ModelValue(ModelSQL, ValueMixin):
+    "Model Value"
+    __name__ = 'test.model_multivalue.value'
+    record = fields.Many2One(
+        'test.model_multivalue', "Record")
+    condition = fields.Char("Condition")
+    value = fields.Char("Value")
+
+
+def register(module):
+    Pool.register(
+        ModelMultiValue,
+        ModelValue,
+        module=module, type_='model')
diff --git a/trytond/tests/test.py b/trytond/tests/test.py
index d03b6dc90b..bdbc81f1d4 100644
--- a/trytond/tests/test.py
+++ b/trytond/tests/test.py
@@ -38,7 +38,6 @@ __all__ = [
     'Many2ManyFilterDomain', 'Many2ManyFilterDomainTarget',
     'Many2ManyFilterDomainRelation',
     'Reference', 'ReferenceTarget', 'ReferenceRequired',
-    'Property',
     'Selection', 'SelectionRequired',
     'DictSchema', 'Dict', 'DictDefault', 'DictRequired',
     'Binary', 'BinaryDefault', 'BinaryRequired', 'BinaryFileStorage',
@@ -720,20 +719,6 @@ class ReferenceRequired(ModelSQL):
             ], required=True)
 
 
-class Property(ModelSQL):
-    'Property'
-    __name__ = 'test.property'
-    char = fields.Property(fields.Char('Test Char'))
-    many2one = fields.Property(fields.Many2One('test.char',
-            'Test Many2One'))
-    numeric = fields.Property(fields.Numeric('Test Numeric'))
-    selection = fields.Property(fields.Selection([
-                (None, ''),
-                ('option_a', 'Option A'),
-                ('option_b', 'Option B')
-            ], 'Test Selection'))
-
-
 class Selection(ModelSQL):
     'Selection'
     __name__ = 'test.selection'
diff --git a/trytond/tests/test_fields.py b/trytond/tests/test_fields.py
index 0432631754..8ac755bc91 100644
--- a/trytond/tests/test_fields.py
+++ b/trytond/tests/test_fields.py
@@ -2999,276 +2999,6 @@ class FieldsTestCase(unittest.TestCase):
                     }])
         self.assert_(reference4)
 
-    @with_transaction()
-    def test_property(self):
-        'Test Property with supported field types'
-        pool = Pool()
-        Property = pool.get('test.property')
-        IrProperty = pool.get('ir.property')
-        ModelField = pool.get('ir.model.field')
-        Char = pool.get('test.char')
-        transaction = Transaction()
-
-        # Test Char
-        prop_a, = Property.create([{'char': 'Test'}])
-        self.assert_(prop_a)
-        self.assertEqual(prop_a.char, 'Test')
-
-        prop_b, = Property.create([{}])
-        self.assert_(prop_b)
-        self.assertEqual(prop_b.char, None)
-
-        prop_c, = Property.create([{'char': 'FooBar'}])
-        self.assert_(prop_c)
-        self.assertEqual(prop_c.char, 'FooBar')
-
-        props = Property.search([('char', '=', 'Test')])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([('char', '=', None)])
-        self.assertEqual(props, [prop_b])
-
-        props = Property.search([('char', '!=', None)])
-        self.assertEqual(props, [prop_a, prop_c])
-
-        props = Property.search([('char', 'like', 'Tes%')])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([('char', 'like', '%Bar')])
-        self.assertEqual(props, [prop_c])
-
-        props = Property.search([('char', 'not like', 'Tes%')])
-        self.assertEqual(props, [prop_b, prop_c])
-
-        props = Property.search([('char', 'ilike', 'tes%')])
-        self.assert_(props, [prop_a])
-
-        props = Property.search([('char', 'ilike', '%bar')])
-        self.assertEqual(props, [prop_c])
-
-        props = Property.search([('char', 'not ilike', 'tes%')])
-        self.assertEqual(props, [prop_b, prop_c])
-
-        props = Property.search([('char', 'in', ['Test'])])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([
-                ('char', 'in', ['Test', 'FooBar'])])
-        self.assertEqual(props, [prop_a, prop_c])
-
-        props = Property.search([
-                ('char', 'not in', ['Test', 'FooBar'])])
-        self.assertEqual(props, [prop_b])
-
-        # Test default value
-        property_field, = ModelField.search([
-                ('model.model', '=', 'test.property'),
-                ('name', '=', 'char'),
-                ], limit=1)
-        IrProperty.create([{
-                    'field': property_field.id,
-                    'value': ',DEFAULT_VALUE',
-                    }])
-
-        prop_d, = Property.create([{}])
-        self.assert_(prop_d)
-        self.assertEqual(prop_d.char, 'DEFAULT_VALUE')
-
-        props = Property.search([('char', '!=', None)])
-        self.assertEqual(props, [prop_a, prop_c, prop_d])
-
-        Property.write([prop_a], {'char': None})
-        self.assertEqual(prop_a.char, None)
-
-        Property.write([prop_b], {'char': 'Test'})
-        self.assertEqual(prop_b.char, 'Test')
-
-        transaction.rollback()
-
-        # Test Many2One
-        char_a, = Char.create([{'char': 'Test'}])
-        self.assert_(char_a)
-
-        char_b, = Char.create([{'char': 'FooBar'}])
-        self.assert_(char_b)
-
-        prop_a, = Property.create([{'many2one': char_a.id}])
-        self.assert_(prop_a)
-        self.assertEqual(prop_a.many2one, char_a)
-
-        prop_b, = Property.create([{'many2one': char_b.id}])
-        self.assert_(prop_b)
-        self.assertEqual(prop_b.many2one, char_b)
-
-        prop_c, = Property.create([{}])
-        self.assert_(prop_c)
-        self.assertEqual(prop_c.many2one, None)
-
-        props = Property.search([('many2one', '=', char_a.id)])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([('many2one', '!=', None)])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([('many2one', '=', None)])
-        self.assertEqual(props, [prop_c])
-
-        self.assertEqual(prop_a.many2one, char_a)
-
-        props = Property.search([
-                ('many2one', 'in', [char_a.id, char_b.id])])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([
-                ('many2one', 'not in', [char_a.id, char_b.id])])
-        self.assertEqual(props, [prop_c])
-
-        Property.write([prop_b], {'many2one': char_a.id})
-        self.assertEqual(prop_b.many2one, char_a)
-
-        transaction.rollback()
-
-        # Test Numeric
-        prop_a, = Property.create([{'numeric': Decimal('1.1')}])
-        self.assert_(prop_a)
-        self.assertEqual(prop_a.numeric, Decimal('1.1'))
-
-        prop_b, = Property.create([{'numeric': Decimal('2.6')}])
-        self.assert_(prop_b)
-        self.assertEqual(prop_b.numeric, Decimal('2.6'))
-
-        prop_c, = Property.create([{}])
-        self.assert_(prop_c)
-        self.assertEqual(prop_c.numeric, None)
-
-        props = Property.search([('numeric', '!=', None)])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([('numeric', '=', None)])
-        self.assertEqual(props, [prop_c])
-
-        props = Property.search([
-                ('numeric', '=', Decimal('1.1')),
-                ])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([
-                ('numeric', '!=', Decimal('1.1'))])
-        self.assertEqual(props, [prop_b, prop_c])
-
-        props = Property.search([
-                ('numeric', '<', Decimal('2.6')),
-                ])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([
-                ('numeric', '<=', Decimal('2.6'))])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([
-                ('numeric', '>', Decimal('1.1')),
-                ])
-        self.assertEqual(props, [prop_b])
-
-        props = Property.search([
-                ('numeric', '>=', Decimal('1.1'))])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([
-                ('numeric', 'in', [Decimal('1.1')])])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([
-                ('numeric', 'in', [Decimal('1.1'), Decimal('2.6')])])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([
-                ('numeric', 'not in', [Decimal('1.1')])])
-        self.assertEqual(props, [prop_b, prop_c])
-
-        props = Property.search([
-                ('numeric', 'not in', [Decimal('1.1'), Decimal('2.6')])])
-        self.assertEqual(props, [prop_c])
-
-        # Test default value
-        property_field, = ModelField.search([
-                ('model.model', '=', 'test.property'),
-                ('name', '=', 'numeric'),
-                ], limit=1)
-        IrProperty.create([{
-                    'field': property_field.id,
-                    'value': ',3.7',
-                    }])
-
-        prop_d, = Property.create([{}])
-        self.assert_(prop_d)
-        self.assertEqual(prop_d.numeric, Decimal('3.7'))
-
-        Property.write([prop_a], {'numeric': None})
-        self.assertEqual(prop_a.numeric, None)
-
-        Property.write([prop_b], {'numeric': Decimal('3.11')})
-        self.assertEqual(prop_b.numeric, Decimal('3.11'))
-
-        transaction.rollback()
-
-        # Test Selection
-        prop_a, = Property.create([{'selection': 'option_a'}])
-        self.assert_(prop_a)
-        self.assertEqual(prop_a.selection, 'option_a')
-
-        prop_b, = Property.create([{'selection': 'option_b'}])
-        self.assert_(prop_b)
-        self.assertEqual(prop_b.selection, 'option_b')
-
-        prop_c, = Property.create([{}])
-        self.assert_(prop_c)
-        self.assertEqual(prop_c.selection, None)
-
-        props = Property.search([('selection', '=', 'option_a')])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([('selection', '!=', None)])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([('selection', '=', None)])
-        self.assertEqual(props, [prop_c])
-
-        props = Property.search([('selection', '!=', 'option_a')])
-        self.assertEqual(props, [prop_b, prop_c])
-
-        props = Property.search([
-                ('selection', 'in', ['option_a'])])
-        self.assertEqual(props, [prop_a])
-
-        props = Property.search([
-                ('selection', 'in', ['option_a', 'option_b'])])
-        self.assertEqual(props, [prop_a, prop_b])
-
-        props = Property.search([
-                ('selection', 'not in', ['option_a'])])
-        self.assertEqual(props, [prop_b, prop_c])
-
-        # Test default value
-        property_field, = ModelField.search([
-                ('model.model', '=', 'test.property'),
-                ('name', '=', 'selection'),
-                ], limit=1)
-        IrProperty.create([{
-                    'field': property_field.id,
-                    'value': ',option_a',
-                    }])
-
-        prop_d, = Property.create([{}])
-        self.assert_(prop_d)
-        self.assertEqual(prop_d.selection, 'option_a')
-
-        Property.write([prop_a], {'selection': None})
-        self.assertEqual(prop_a.selection, None)
-
-        Property.write([prop_c], {'selection': 'option_b'})
-        self.assertEqual(prop_c.selection, 'option_b')
-
     @with_transaction()
     def test_selection(self):
         'Test Selection'
diff --git a/trytond/tests/test_multivalue.py b/trytond/tests/test_multivalue.py
new file mode 100644
index 0000000000..8893f1a5ca
--- /dev/null
+++ b/trytond/tests/test_multivalue.py
@@ -0,0 +1,115 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+import unittest
+
+from trytond.tests.test_tryton import activate_module, with_transaction
+from trytond.pool import Pool
+
+
+class MultiValueTestCase(unittest.TestCase):
+    "Test MultiValue"
+
+    @classmethod
+    def setUpClass(cls):
+        activate_module('tests')
+
+    @with_transaction()
+    def test_get_multivalue(self):
+        "Test get_multivalue"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+        ModelValue = pool.get('test.model_multivalue.value')
+
+        record = ModelMultiValue()
+        record.save()
+        value, = ModelValue.search([])
+        value.condition = "foo"
+        value.value = "bar"
+        value.save()
+
+        self.assertEqual(
+            record.get_multivalue('value', condition="foo"),
+            "bar")
+
+    @with_transaction()
+    def test_get_multivalue_default(self):
+        "Test get_multivalue default value"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+
+        record = ModelMultiValue()
+        record.save()
+
+        self.assertEqual(record.get_multivalue('value'), "default")
+
+    @with_transaction()
+    def test_get_multivalue_match_none(self):
+        "Test get_multivalue does not match None"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+        ModelValue = pool.get('test.model_multivalue.value')
+
+        record = ModelMultiValue()
+        record.save()
+        value = ModelValue(record=record, condition="foo", value="bar")
+        value.save()
+
+        self.assertEqual(
+            record.get_multivalue('value', condition="test"),
+            "default")
+
+    @with_transaction()
+    def test_set_multivalue(self):
+        "Test set_multivalue"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+        ModelValue = pool.get('test.model_multivalue.value')
+
+        record = ModelMultiValue()
+        record.save()
+        record.set_multivalue('value', "set", condition="test")
+
+        value, = ModelValue.search([('condition', '=', "test")])
+        self.assertEqual(value.record, record)
+        self.assertEqual(value.value, "set")
+
+    @with_transaction()
+    def test_set_multivalue_match_none(self):
+        "Test set_multivalue matches None"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+        ModelValue = pool.get('test.model_multivalue.value')
+
+        record = ModelMultiValue()
+        record.save()
+        record.set_multivalue('value', "set", condition="test")
+
+        self.assertEqual(len(ModelValue.search([])), 2)
+
+    @with_transaction()
+    def test_mutlivalue_setter(self):
+        "Test multivalue setter"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+
+        record, = ModelMultiValue.create([{
+                    'value': "setter",
+                    }])
+
+        self.assertEqual(record.get_multivalue('value'), "setter")
+
+    @with_transaction()
+    def test_mutlivalue_getter(self):
+        "Test multivalue getter"
+        pool = Pool()
+        ModelMultiValue = pool.get('test.model_multivalue')
+
+        record = ModelMultiValue(value="getter")
+        record.save()
+
+        read, = ModelMultiValue.read([record.id], ['value'])
+        self.assertEqual(read['value'], "getter")
+
+
+def suite():
+    return unittest.TestLoader().loadTestsFromTestCase(MultiValueTestCase)
diff --git a/trytond/tools/multivalue.py b/trytond/tools/multivalue.py
new file mode 100644
index 0000000000..e0e12db727
--- /dev/null
+++ b/trytond/tools/multivalue.py
@@ -0,0 +1,111 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from decimal import Decimal
+
+from sql import Table, Column, Literal, Union, Null
+from sql.aggregate import Max
+
+from trytond import backend
+from trytond.pool import Pool
+from trytond.transaction import Transaction
+
+
+def migrate_property(
+        model_name, field_names, ValueModel, value_names,
+        parent=None, fields=None):
+    "Migrate property from model_name.field_name to ValueModel.value_name"
+    pool = Pool()
+    Field = pool.get('ir.model.field')
+    Model = pool.get('ir.model')
+    TableHandler = backend.get('TableHandler')
+    if not TableHandler.table_exist('ir_property'):
+        return
+    cursor = Transaction().connection.cursor()
+    field = Field.__table__()
+    model = Model.__table__()
+    table = ValueModel.__table__()
+
+    if fields is None:
+        fields = []
+    if isinstance(field_names, basestring):
+        field_names = [field_names]
+    if isinstance(value_names, basestring):
+        value_names = [value_names]
+
+    def split_value(value):
+        return value.split(',')[1]
+    cast_funcs = {
+        'numeric': lambda v: Decimal(split_value(v)) if v else None,
+        'integer': lambda v: int(split_value(v)) if v else None,
+        'float': lambda v: float(split_value(v)) if v else None,
+        'char': lambda v: split_value(v) if v else None,
+        'selection': lambda v: split_value(v) if v else None,
+        'many2one': lambda v: int(split_value(v)) if v else None,
+        'reference': lambda v: v,
+        }
+
+    casts = []
+    queries = []
+    for field_name, value_name in zip(field_names, value_names):
+        value_field = getattr(ValueModel, value_name)
+        casts.append(cast_funcs[value_field._type])
+
+        property_ = Table('ir_property')
+        columns = [
+            Literal(None).as_(f) if f != value_name
+            else property_.value.as_(value_name)
+            for f in value_names]
+        if parent:
+            columns.append(property_.res.as_(parent))
+            where = property_.res.like(model_name + ',%')
+        else:
+            where = property_.res == Null
+        columns.extend([Column(property_, f).as_(f) for f in fields])
+        query = property_.join(field,
+            condition=property_.field == field.id
+            ).join(model,
+                condition=field.model == model.id
+                ).select(*columns,
+                    where=where
+                    & (field.name == field_name)
+                    & (model.model == model_name))
+        queries.append(query)
+
+    union = Union(*queries)
+    columns = [Max(Column(union, f)).as_(f) for f in value_names]
+    if parent:
+        columns.append(Column(union, parent).as_(parent))
+        pcolumns = [Column(union, parent)]
+    else:
+        pcolumns = []
+    vcolumns = [Column(union, f).as_(f) for f in fields]
+    cursor.execute(
+        *union.select(*(columns + vcolumns), group_by=pcolumns + vcolumns))
+
+    columns = [Column(table, f) for f in value_names]
+    if parent:
+        pcolumns = [Column(table, parent)]
+    else:
+        pcolumns = []
+    vcolumns = [Column(table, f) for f in fields]
+    values = []
+    l = len(value_names)
+    for row in cursor.fetchall():
+        value = [c(v) for v, c in zip(row, casts)]
+        if parent:
+            value.append(int(row[l].split(',')[1]) if row[l] else None)
+            i = 1
+        else:
+            i = 0
+        value.extend(row[l + i:])
+        values.append(value)
+    if (values and not (
+                # No property defined
+                len(values) == 1
+                and all(x is None for x in values[0][:len(columns)]))):
+
+        # Delete previous migrated values
+        cursor.execute(*table.delete())
+
+        cursor.execute(*table.insert(
+                columns + pcolumns + vcolumns, values=values))