diff --git a/trytond/trytond/backend/postgresql/init.sql b/trytond/trytond/backend/postgresql/init.sql
index bb1bf18cb7..c53645d147 100644
--- a/trytond/trytond/backend/postgresql/init.sql
+++ b/trytond/trytond/backend/postgresql/init.sql
@@ -40,7 +40,7 @@ CREATE TABLE ir_ui_view (
         CONSTRAINT ir_ui_view_id_positive CHECK(id >= 0),
     model VARCHAR NOT NULL,
     "type" VARCHAR,
-    data TEXT NOT NULL,
+    data TEXT,
     field_childs VARCHAR,
     priority INTEGER NOT NULL,
     PRIMARY KEY(id)
@@ -85,7 +85,7 @@ CREATE TABLE ir_lang (
 CREATE TABLE res_user (
     id INTEGER GENERATED BY DEFAULT AS IDENTITY NOT NULL
         CONSTRAINT res_user_id_positive CHECK(id >= 0),
-    name VARCHAR NOT NULL,
+    name VARCHAR,
     active BOOLEAN NOT NULL,
     login VARCHAR NOT NULL,
     password VARCHAR,
diff --git a/trytond/trytond/backend/sqlite/init.sql b/trytond/trytond/backend/sqlite/init.sql
index d45462f5a3..a7a2451f45 100644
--- a/trytond/trytond/backend/sqlite/init.sql
+++ b/trytond/trytond/backend/sqlite/init.sql
@@ -1,11 +1,7 @@
 CREATE TABLE ir_configuration (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     language VARCHAR,
-    hostname VARCHAR,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    hostname VARCHAR
 );
 
 CREATE TABLE ir_model (
@@ -13,128 +9,75 @@ CREATE TABLE ir_model (
     name VARCHAR,
     string VARCHAR,
     info TEXT,
-    module VARCHAR,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    module VARCHAR
 );
 
+CREATE UNIQUE INDEX ir_model_name_unique ON ir_model (name);
+
 CREATE TABLE ir_model_field (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
-    model VARCHAR,
-    name VARCHAR,
+    model VARCHAR NOT NULL,
+    name VARCHAR NOT NULL,
     relation VARCHAR,
     string VARCHAR,
     ttype VARCHAR,
     help TEXT,
     module VARCHAR,
-    "access" BOOLEAN,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    "access" BOOLEAN
 );
 
 
 CREATE TABLE ir_ui_view (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
-    model VARCHAR,
+    model VARCHAR NOT NULL,
     "type" VARCHAR,
     data TEXT,
     field_childs VARCHAR,
-    priority INTEGER,
-    domain VARCHAR,
-    inherit INTEGER,
-    module VARCHAR,
-    name VARCHAR,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    priority INTEGER NOT NULL
 );
 
 CREATE TABLE ir_ui_menu (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     parent INTEGER,
-    name VARCHAR,
+    name VARCHAR NOT NULL,
     icon VARCHAR,
     active BOOLEAN,
-    sequence INTEGER,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    sequence INTEGER
 );
 
 CREATE TABLE ir_translation (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     lang VARCHAR,
     src TEXT,
-    name VARCHAR,
+    name VARCHAR NOT NULL,
     res_id INTEGER,
     value TEXT,
     "type" VARCHAR,
     module VARCHAR,
-    fuzzy BOOLEAN,
-    overriding_module VARCHAR,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    fuzzy BOOLEAN NOT NULL,
+    overriding_module VARCHAR
 );
 
 CREATE TABLE ir_lang (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
-    name VARCHAR,
-    code VARCHAR,
-    translatable BOOLEAN,
+    name VARCHAR NOT NULL,
+    code VARCHAR NOT NULL,
+    translatable BOOLEAN NOT NULL,
     parent VARCHAR,
-    active BOOLEAN,
-    direction VARCHAR,
-    am VARCHAR,
-    pm VARCHAR,
-    "date" VARCHAR,
-    grouping VARCHAR,
-    decimal_point VARCHAR,
-    thousands_sep VARCHAR,
-    mon_grouping VARCHAR,
-    mon_decimal_point VARCHAR,
-    mon_thousands_sep VARCHAR,
-    p_sign_posn INTEGER,
-    n_sign_posn INTEGER,
-    positive_sign VARCHAR,
-    negative_sign VARCHAR,
-    p_cs_precedes BOOLEAN,
-    n_cs_precedes BOOLEAN,
-    p_sep_by_space BOOLEAN,
-    n_sep_by_space BOOLEAN,
-    pg_text_search VARCHAR,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    active BOOLEAN NOT NULL,
+    direction VARCHAR NOT NULL
 );
 
 CREATE TABLE res_user (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     name VARCHAR,
-    active BOOLEAN,
-    login VARCHAR,
-    password VARCHAR,
-    email VARCHAR,
-    language INTEGER,
-    menu INTEGER,
-    password_hash VARCHAR,
-    password_reset VARCHAR,
-    password_reset_expire TIMESTAMP,
-    signature TEXT,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    active BOOLEAN NOT NULL,
+    login VARCHAR NOT NULL,
+    password VARCHAR
 );
 
+CREATE UNIQUE INDEX res_user_login_key ON res_user (login);
+
 INSERT INTO res_user (id, login, password, name, active) VALUES (0, 'root', NULL, 'Root', 0);
 
 CREATE TABLE res_group (
@@ -144,14 +87,8 @@ CREATE TABLE res_group (
 
 CREATE TABLE "res_user-res_group" (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
-    "user" INTEGER,
-    "group" INTEGER,
-    active BOOLEAN,
-    parent INTEGER,
-    create_date TIMESTAMP,
-    create_uid INTEGER,
-    write_date TIMESTAMP,
-    write_uid INTEGER
+    "user" INTEGER NOT NULL,
+    "group" INTEGER NOT NULL
 );
 
 CREATE TABLE ir_module (
@@ -160,10 +97,12 @@ CREATE TABLE ir_module (
     create_date TIMESTAMP,
     write_date TIMESTAMP,
     write_uid INTEGER,
-    name VARCHAR,
+    name VARCHAR NOT NULL,
     state VARCHAR
 );
 
+CREATE UNIQUE INDEX ir_module_name_uniq ON ir_module (name);
+
 CREATE TABLE ir_module_dependency (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     create_uid INTEGER,
@@ -176,7 +115,7 @@ CREATE TABLE ir_module_dependency (
 
 CREATE TABLE ir_cache (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
-    name VARCHAR,
+    name VARCHAR NOT NULL,
     "timestamp" TIMESTAMP,
     create_date TIMESTAMP,
     create_uid INTEGER,