diff --git a/config/database/hsql/create-schemas.sql b/config/database/hsql/create-schemas.sql
index 69bf4c0e..8a4297b3 100644
--- a/config/database/hsql/create-schemas.sql
+++ b/config/database/hsql/create-schemas.sql
@@ -4,8 +4,7 @@ CREATE TABLE COLLABORATOR (
   creation_date DATE);
 
 CREATE TABLE USER (
-  id                  INTEGER      NOT NULL IDENTITY,
-  colaborator_id      INTEGER      NOT NULL,
+  colaborator_id      INTEGER      NOT NULL IDENTITY,
   authentication_type CHAR(1)      NOT NULL,
   authenticator_uri   VARCHAR(255) NULL,
   firstname           VARCHAR(255) NOT NULL,
@@ -68,7 +67,10 @@ CREATE TABLE TAG
 CREATE TABLE ACCESS_AUDITORY (
   id         INTEGER NOT NULL IDENTITY,
   user_id    INTEGER NOT NULL,
-  login_date DATE
+  login_date DATE,
+  FOREIGN KEY (user_id) REFERENCES USER (colaborator_id)
+    ON DELETE CASCADE
+    ON UPDATE NO ACTION
 );
 
 COMMIT;
diff --git a/config/database/mysql/create-schemas.sql b/config/database/mysql/create-schemas.sql
index c9164ad0..8831d086 100644
--- a/config/database/mysql/create-schemas.sql
+++ b/config/database/mysql/create-schemas.sql
@@ -13,8 +13,7 @@ CREATE TABLE COLLABORATOR (
   CHARACTER SET utf8;
 
 CREATE TABLE USER (
-  id               INTEGER            NOT NULL PRIMARY KEY AUTO_INCREMENT,
-  colaborator_id   INTEGER            NOT NULL,
+  colaborator_id   INTEGER            NOT NULL PRIMARY KEY,
   authentication_type CHAR(1)
                       CHARACTER SET utf8 NOT NULL,
   authenticator_uri   VARCHAR(255)
@@ -103,7 +102,10 @@ CREATE TABLE TAG (
 CREATE TABLE ACCESS_AUDITORY (
   id         INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,
   login_date DATE,
-  user_id    INTEGER NOT NULL
+  user_id    INTEGER NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES USER (colaborator_id)
+    ON DELETE CASCADE
+    ON UPDATE NO ACTION
 )
   CHARACTER SET utf8;
 
diff --git a/config/database/mysql/v3.0-to-v3.2.sql b/config/database/mysql/v3.0-to-v3.2.sql
new file mode 100644
index 00000000..c3570244
--- /dev/null
+++ b/config/database/mysql/v3.0-to-v3.2.sql
@@ -0,0 +1,7 @@
+ALTER TABLE `USER` DROP COLUMN `id`;
+
+ALTER TABLE `ACCESS_AUDITORY`
+  ADD CONSTRAINT
+  FOREIGN KEY (user_id) REFERENCES USER (colaborator_id)
+    ON DELETE CASCADE
+    ON UPDATE NO ACTION;
\ No newline at end of file
diff --git a/config/database/postgres/create-schemas.sql b/config/database/postgres/create-schemas.sql
index 723cc2dd..544f11f3 100644
--- a/config/database/postgres/create-schemas.sql
+++ b/config/database/postgres/create-schemas.sql
@@ -5,10 +5,9 @@ CREATE TABLE COLLABORATOR (
 );
 
 CREATE TABLE "user" (
-  id                  SERIAL       NOT NULL PRIMARY KEY,
   authentication_type TEXT         NOT NULL,
   authenticator_uri   VARCHAR(255),
-  colaborator_id      INTEGER      NOT NULL,
+  colaborator_id      INTEGER      NOT NULL PRIMARY KEY,
   firstname           VARCHAR(255) NOT NULL,
   lastname            VARCHAR(255) NOT NULL,
   password            VARCHAR(255) NOT NULL,
@@ -73,7 +72,8 @@ CREATE TABLE TAG (
 CREATE TABLE ACCESS_AUDITORY (
   id         SERIAL  NOT NULL PRIMARY KEY,
   login_date DATE,
-  user_id    INTEGER NOT NULL
+  user_id    INTEGER NOT NULL,
+  FOREIGN KEY (user_id) REFERENCES "user" (colaborator_id) ON DELETE CASCADE ON UPDATE NO ACTION
 );