diff --git a/.env b/.env
index 55e5605..084056d 100644
--- a/.env
+++ b/.env
@@ -25,7 +25,7 @@ APP_SECRET=d484088b38870d327fe91ef10147c41d
 #
 # DATABASE_URL="sqlite:///%kernel.project_dir%/var/data.db"
 # DATABASE_URL="mysql://app:!ChangeMe!@127.0.0.1:3306/app?serverVersion=8.0.32&charset=utf8mb4"
-DATABASE_URL="mysql://web_edm:%env(DATABASE_PASSWORD)%@127.0.0.1:3306/app?serverVersion=10.11.3-MariaDB&charset=utf8mb4"
+DATABASE_URL="mysql://web_edm:%env(DATABASE_PASSWORD)%@127.0.0.1:3306/web_edm?serverVersion=10.11.3-MariaDB&charset=utf8mb4"
 # DATABASE_URL="postgresql://app:!ChangeMe!@127.0.0.1:5432/app?serverVersion=15&charset=utf8"
 ###< doctrine/doctrine-bundle ###
 
diff --git a/.idea/php.xml b/.idea/php.xml
index 1d02b4c..4fa0002 100644
--- a/.idea/php.xml
+++ b/.idea/php.xml
@@ -138,6 +138,9 @@
       <path value="$PROJECT_DIR$/vendor/symfony/finder" />
       <path value="$PROJECT_DIR$/vendor/symfony/framework-bundle" />
       <path value="$PROJECT_DIR$/vendor/symfony/form" />
+      <path value="$PROJECT_DIR$/vendor/gedmo/doctrine-extensions" />
+      <path value="$PROJECT_DIR$/vendor/behat/transliterator" />
+      <path value="$PROJECT_DIR$/vendor/stof/doctrine-extensions-bundle" />
     </include_path>
   </component>
   <component name="PhpProjectSharedConfiguration" php_language_level="8.1">
diff --git a/.idea/web_edm.iml b/.idea/web_edm.iml
index 248fcd8..bf33080 100644
--- a/.idea/web_edm.iml
+++ b/.idea/web_edm.iml
@@ -130,6 +130,9 @@
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/finder" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/framework-bundle" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/form" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/gedmo/doctrine-extensions" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/behat/transliterator" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/stof/doctrine-extensions-bundle" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
diff --git a/composer.json b/composer.json
index 2dc1c6a..378fe4e 100644
--- a/composer.json
+++ b/composer.json
@@ -4,25 +4,26 @@
     "minimum-stability": "stable",
     "prefer-stable": true,
     "require": {
-        "php": ">=8.1",
-        "ext-ctype": "*",
-        "ext-iconv": "*",
-        "doctrine/annotations": "^2.0",
-        "doctrine/doctrine-bundle": "^2.9",
+        "php":                                 ">=8.1",
+        "ext-ctype":                           "*",
+        "ext-iconv":                           "*",
+        "doctrine/annotations":                "^2.0",
+        "doctrine/doctrine-bundle":            "^2.9",
         "doctrine/doctrine-migrations-bundle": "^3.2",
-        "doctrine/orm": "^2.15",
-        "phpdocumentor/reflection-docblock": "^5.3",
-        "phpstan/phpdoc-parser": "^1.20",
-        "symfony/asset": "6.2.*",
-        "symfony/console": "6.2.*",
-        "symfony/doctrine-messenger": "6.2.*",
-        "symfony/dotenv": "6.2.*",
-        "symfony/expression-language": "6.2.*",
-        "symfony/flex": "^2",
-        "symfony/form": "6.2.*",
-        "symfony/framework-bundle": "6.2.*",
-        "symfony/http-client": "6.2.*",
-        "symfony/intl": "6.2.*",
+        "doctrine/orm":                        "^2.15",
+        "phpdocumentor/reflection-docblock":   "^5.3",
+        "phpstan/phpdoc-parser":               "^1.20",
+        "stof/doctrine-extensions-bundle":     "^1.7",
+        "symfony/asset":                       "6.2.*",
+        "symfony/console":                     "6.2.*",
+        "symfony/doctrine-messenger":          "6.2.*",
+        "symfony/dotenv":                      "6.2.*",
+        "symfony/expression-language":         "6.2.*",
+        "symfony/flex":                        "^2",
+        "symfony/form":                        "6.2.*",
+        "symfony/framework-bundle":            "6.2.*",
+        "symfony/http-client":                 "6.2.*",
+        "symfony/intl":                        "6.2.*",
         "symfony/mailer": "6.2.*",
         "symfony/mime": "6.2.*",
         "symfony/monolog-bundle": "^3.0",
diff --git a/composer.lock b/composer.lock
index 0788099..4975535 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,22 +1,71 @@
 {
-    "_readme": [
+    "_readme":      [
         "This file locks the dependencies of your project to a known state",
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a736a817c023df9a07c982ffb5f7b2c9",
-    "packages": [
+    "content-hash": "27ec98e1e5ebc13fb8e85dbf04b0edaa",
+    "packages":     [
         {
-            "name": "doctrine/annotations",
-            "version": "2.0.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/doctrine/annotations.git",
+            "name":             "behat/transliterator",
+            "version":          "v1.5.0",
+            "source":           {
+                "type":      "git",
+                "url":       "https://github.com/Behat/Transliterator.git",
+                "reference": "baac5873bac3749887d28ab68e2f74db3a4408af"
+            },
+            "dist":             {
+                "type":      "zip",
+                "url":       "https://api.github.com/repos/Behat/Transliterator/zipball/baac5873bac3749887d28ab68e2f74db3a4408af",
+                "reference": "baac5873bac3749887d28ab68e2f74db3a4408af",
+                "shasum":    ""
+            },
+            "require":          {
+                "php": ">=7.2"
+            },
+            "require-dev":      {
+                "chuyskywalker/rolling-curl": "^3.1",
+                "php-yaoi/php-yaoi":          "^1.0",
+                "phpunit/phpunit":            "^8.5.25 || ^9.5.19"
+            },
+            "type":             "library",
+            "extra":            {
+                "branch-alias": {
+                    "dev-master": "1.x-dev"
+                }
+            },
+            "autoload":         {
+                "psr-4": {
+                    "Behat\\Transliterator\\": "src/Behat/Transliterator"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license":          [
+                "Artistic-1.0"
+            ],
+            "description":      "String transliterator",
+            "keywords":         [
+                "i18n",
+                "slug",
+                "transliterator"
+            ],
+            "support":          {
+                "issues": "https://github.com/Behat/Transliterator/issues",
+                "source": "https://github.com/Behat/Transliterator/tree/v1.5.0"
+            },
+            "time":             "2022-03-30T09:27:43+00:00"
+        },
+        {
+            "name":        "doctrine/annotations",
+            "version":     "2.0.1",
+            "source":      {
+                "type":      "git",
+                "url":       "https://github.com/doctrine/annotations.git",
                 "reference": "e157ef3f3124bbf6fe7ce0ffd109e8a8ef284e7f"
             },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/annotations/zipball/e157ef3f3124bbf6fe7ce0ffd109e8a8ef284e7f",
+            "dist":        {
+                "type":      "zip",
+                "url":       "https://api.github.com/repos/doctrine/annotations/zipball/e157ef3f3124bbf6fe7ce0ffd109e8a8ef284e7f",
                 "reference": "e157ef3f3124bbf6fe7ce0ffd109e8a8ef284e7f",
                 "shasum": ""
             },
@@ -1450,25 +1499,135 @@
                 "issues": "https://github.com/egulias/EmailValidator/issues",
                 "source": "https://github.com/egulias/EmailValidator/tree/4.0.1"
             },
-            "funding": [
+            "funding":  [
                 {
-                    "url": "https://github.com/egulias",
+                    "url":  "https://github.com/egulias",
                     "type": "github"
                 }
             ],
-            "time": "2023-01-14T14:17:03+00:00"
+            "time":     "2023-01-14T14:17:03+00:00"
         },
         {
-            "name": "monolog/monolog",
+            "name":             "gedmo/doctrine-extensions",
+            "version":          "v3.11.1",
+            "source":           {
+                "type":      "git",
+                "url":       "https://github.com/doctrine-extensions/DoctrineExtensions.git",
+                "reference": "ae4bdf0d567e06b6bb1902a560ee78961b230953"
+            },
+            "dist":             {
+                "type":      "zip",
+                "url":       "https://api.github.com/repos/doctrine-extensions/DoctrineExtensions/zipball/ae4bdf0d567e06b6bb1902a560ee78961b230953",
+                "reference": "ae4bdf0d567e06b6bb1902a560ee78961b230953",
+                "shasum":    ""
+            },
+            "require":          {
+                "behat/transliterator":          "~1.2",
+                "doctrine/annotations":          "^1.13 || ^2.0",
+                "doctrine/collections":          "^1.2 || ^2.0",
+                "doctrine/common":               "^2.13 || ^3.0",
+                "doctrine/event-manager":        "^1.2 || ^2.0",
+                "doctrine/persistence":          "^2.2 || ^3.0",
+                "php":                           "^7.2 || ^8.0",
+                "psr/cache":                     "^1 || ^2 || ^3",
+                "symfony/cache":                 "^4.4 || ^5.3 || ^6.0",
+                "symfony/deprecation-contracts": "^2.1 || ^3.0"
+            },
+            "conflict":         {
+                "doctrine/cache":       "<1.11",
+                "doctrine/dbal":        "<2.13.1 || ^3.0 <3.2",
+                "doctrine/mongodb-odm": "<2.3",
+                "doctrine/orm":         "<2.10.2",
+                "sebastian/comparator": "<2.0"
+            },
+            "require-dev":      {
+                "doctrine/cache":            "^1.11 || ^2.0",
+                "doctrine/dbal":             "^2.13.1 || ^3.2",
+                "doctrine/doctrine-bundle":  "^2.3",
+                "doctrine/mongodb-odm":      "^2.3",
+                "doctrine/orm":              "^2.10.2",
+                "friendsofphp/php-cs-fixer": "^3.4.0,<3.10",
+                "nesbot/carbon":             "^2.55",
+                "phpstan/phpstan":           "^1.9",
+                "phpstan/phpstan-doctrine":  "^1.0",
+                "phpstan/phpstan-phpunit":   "^1.0",
+                "phpunit/phpunit":           "^8.5 || ^9.5",
+                "symfony/console":           "^4.4 || ^5.3 || ^6.0",
+                "symfony/phpunit-bridge":    "^6.0",
+                "symfony/yaml":              "^4.4 || ^5.3 || ^6.0"
+            },
+            "suggest":          {
+                "doctrine/mongodb-odm": "to use the extensions with the MongoDB ODM",
+                "doctrine/orm":         "to use the extensions with the ORM",
+                "symfony/cache":        "to cache parsed annotations"
+            },
+            "type":             "library",
+            "extra":            {
+                "branch-alias": {
+                    "dev-main": "3.12-dev"
+                }
+            },
+            "autoload":         {
+                "psr-4": {
+                    "Gedmo\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license":          [
+                "MIT"
+            ],
+            "authors":          [
+                {
+                    "name":  "Gediminas Morkevicius",
+                    "email": "gediminas.morkevicius@gmail.com"
+                },
+                {
+                    "name":  "Gustavo Falco",
+                    "email": "comfortablynumb84@gmail.com"
+                },
+                {
+                    "name":  "David Buchmann",
+                    "email": "david@liip.ch"
+                }
+            ],
+            "description":      "Doctrine behavioral extensions",
+            "homepage":         "http://gediminasm.org/",
+            "keywords":         [
+                "Blameable",
+                "behaviors",
+                "doctrine",
+                "extensions",
+                "gedmo",
+                "loggable",
+                "nestedset",
+                "odm",
+                "orm",
+                "sluggable",
+                "sortable",
+                "timestampable",
+                "translatable",
+                "tree",
+                "uploadable"
+            ],
+            "support":          {
+                "email":  "gediminas.morkevicius@gmail.com",
+                "issues": "https://github.com/doctrine-extensions/DoctrineExtensions/issues",
+                "source": "https://github.com/doctrine-extensions/DoctrineExtensions/tree/v3.11.1",
+                "wiki":   "https://github.com/Atlantic18/DoctrineExtensions/tree/main/doc"
+            },
+            "time":             "2023-02-20T19:24:07+00:00"
+        },
+        {
+            "name":    "monolog/monolog",
             "version": "3.3.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/Seldaek/monolog.git",
+            "source":  {
+                "type":      "git",
+                "url":       "https://github.com/Seldaek/monolog.git",
                 "reference": "9b5daeaffce5b926cac47923798bba91059e60e2"
             },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/9b5daeaffce5b926cac47923798bba91059e60e2",
+            "dist":    {
+                "type":      "zip",
+                "url":       "https://api.github.com/repos/Seldaek/monolog/zipball/9b5daeaffce5b926cac47923798bba91059e60e2",
                 "reference": "9b5daeaffce5b926cac47923798bba91059e60e2",
                 "shasum": ""
             },
@@ -2031,16 +2190,90 @@
             "time": "2021-07-14T16:46:02+00:00"
         },
         {
-            "name": "symfony/asset",
-            "version": "v6.2.7",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/asset.git",
+            "name":             "stof/doctrine-extensions-bundle",
+            "version":          "v1.7.1",
+            "source":           {
+                "type":      "git",
+                "url":       "https://github.com/stof/StofDoctrineExtensionsBundle.git",
+                "reference": "fa650e60e174afa06c09e28a54fb1854af04c7fe"
+            },
+            "dist":             {
+                "type":      "zip",
+                "url":       "https://api.github.com/repos/stof/StofDoctrineExtensionsBundle/zipball/fa650e60e174afa06c09e28a54fb1854af04c7fe",
+                "reference": "fa650e60e174afa06c09e28a54fb1854af04c7fe",
+                "shasum":    ""
+            },
+            "require":          {
+                "gedmo/doctrine-extensions":    "^2.3.4 || ^3.0.0",
+                "php":                          "^7.1.3 || ^8.0",
+                "symfony/config":               "^4.4 || ^5.2 || ^6.0",
+                "symfony/dependency-injection": "^4.4 || ^5.2 || ^6.0",
+                "symfony/event-dispatcher":     "^4.4 || ^5.2 || ^6.0",
+                "symfony/http-kernel":          "^4.4 || ^5.2 || ^6.0"
+            },
+            "require-dev":      {
+                "symfony/mime":           "^4.4 || ^5.2 || ^6.0",
+                "symfony/phpunit-bridge": "^v5.2.4 || ^6.0",
+                "symfony/security-core":  "^4.4 || ^5.2 || ^6.0"
+            },
+            "suggest":          {
+                "doctrine/doctrine-bundle":    "to use the ORM extensions",
+                "doctrine/mongodb-odm-bundle": "to use the MongoDB ODM extensions",
+                "symfony/mime":                "To use the Mime component integration for Uploadable"
+            },
+            "type":             "symfony-bundle",
+            "extra":            {
+                "branch-alias": {
+                    "dev-main": "1.x-dev"
+                }
+            },
+            "autoload":         {
+                "psr-4": {
+                    "Stof\\DoctrineExtensionsBundle\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license":          [
+                "MIT"
+            ],
+            "authors":          [
+                {
+                    "name":  "Christophe Coevoet",
+                    "email": "stof@notk.org"
+                }
+            ],
+            "description":      "Integration of the gedmo/doctrine-extensions with Symfony",
+            "homepage":         "https://github.com/stof/StofDoctrineExtensionsBundle",
+            "keywords":         [
+                "behaviors",
+                "doctrine2",
+                "extensions",
+                "gedmo",
+                "loggable",
+                "nestedset",
+                "sluggable",
+                "sortable",
+                "timestampable",
+                "translatable",
+                "tree"
+            ],
+            "support":          {
+                "issues": "https://github.com/stof/StofDoctrineExtensionsBundle/issues",
+                "source": "https://github.com/stof/StofDoctrineExtensionsBundle/tree/v1.7.1"
+            },
+            "time":             "2022-09-30T11:52:24+00:00"
+        },
+        {
+            "name":        "symfony/asset",
+            "version":     "v6.2.7",
+            "source":      {
+                "type":      "git",
+                "url":       "https://github.com/symfony/asset.git",
                 "reference": "223df790e684ecc7bc37323c2d1e265129ca02de"
             },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/asset/zipball/223df790e684ecc7bc37323c2d1e265129ca02de",
+            "dist":        {
+                "type":      "zip",
+                "url":       "https://api.github.com/repos/symfony/asset/zipball/223df790e684ecc7bc37323c2d1e265129ca02de",
                 "reference": "223df790e684ecc7bc37323c2d1e265129ca02de",
                 "shasum": ""
             },
diff --git a/config/bundles.php b/config/bundles.php
index 0457f99..e18835f 100644
--- a/config/bundles.php
+++ b/config/bundles.php
@@ -1,14 +1,15 @@
 <?php
 
 return [
-    Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
-    Doctrine\Bundle\DoctrineBundle\DoctrineBundle::class => ['all' => true],
-    Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle::class => ['all' => true],
-    Symfony\Bundle\DebugBundle\DebugBundle::class => ['dev' => true],
-    Symfony\Bundle\TwigBundle\TwigBundle::class => ['all' => true],
-    Symfony\Bundle\WebProfilerBundle\WebProfilerBundle::class => ['dev' => true, 'test' => true],
-    Twig\Extra\TwigExtraBundle\TwigExtraBundle::class => ['all' => true],
-    Symfony\Bundle\SecurityBundle\SecurityBundle::class => ['all' => true],
-    Symfony\Bundle\MonologBundle\MonologBundle::class => ['all' => true],
-    Symfony\Bundle\MakerBundle\MakerBundle::class => ['dev' => true],
+    Symfony\Bundle\FrameworkBundle\FrameworkBundle::class             => ['all' => true],
+    Doctrine\Bundle\DoctrineBundle\DoctrineBundle::class              => ['all' => true],
+    Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle::class  => ['all' => true],
+    Symfony\Bundle\DebugBundle\DebugBundle::class                     => ['dev' => true],
+    Symfony\Bundle\TwigBundle\TwigBundle::class                       => ['all' => true],
+    Symfony\Bundle\WebProfilerBundle\WebProfilerBundle::class         => ['dev' => true, 'test' => true],
+    Twig\Extra\TwigExtraBundle\TwigExtraBundle::class                 => ['all' => true],
+    Symfony\Bundle\SecurityBundle\SecurityBundle::class               => ['all' => true],
+    Symfony\Bundle\MonologBundle\MonologBundle::class                 => ['all' => true],
+    Symfony\Bundle\MakerBundle\MakerBundle::class                     => ['dev' => true],
+    Stof\DoctrineExtensionsBundle\StofDoctrineExtensionsBundle::class => ['all' => true],
 ];
diff --git a/config/packages/stof_doctrine_extensions.yaml b/config/packages/stof_doctrine_extensions.yaml
new file mode 100644
index 0000000..6979b41
--- /dev/null
+++ b/config/packages/stof_doctrine_extensions.yaml
@@ -0,0 +1,7 @@
+# Read the documentation: https://symfony.com/doc/current/bundles/StofDoctrineExtensionsBundle/index.html
+# See the official DoctrineExtensions documentation for more details: https://github.com/doctrine-extensions/DoctrineExtensions/tree/main/doc
+stof_doctrine_extensions:
+    default_locale: en_US
+    orm:
+        default:
+            timestampable: true
\ No newline at end of file
diff --git a/migrations/Version20230517165002.php b/migrations/Version20230517165002.php
new file mode 100644
index 0000000..31fae8f
--- /dev/null
+++ b/migrations/Version20230517165002.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20230517165002 extends AbstractMigration {
+    public function getDescription (): string {
+        return '';
+    }
+
+    public function up (Schema $schema): void {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE TABLE document (id INT AUTO_INCREMENT NOT NULL, user_id INT NOT NULL, name VARCHAR(255) NOT NULL, description LONGTEXT DEFAULT NULL, creation DATETIME NOT NULL COMMENT \'(DC2Type:datetime_immutable)\', modification DATETIME NOT NULL COMMENT \'(DC2Type:datetime_immutable)\', INDEX IDX_D8698A76A76ED395 (user_id), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'
+        );
+        $this->addSql('CREATE TABLE document_tag (document_id int NOT NULL, tag_id int NOT NULL, INDEX IDX_D0234567C33F7837 (document_id), INDEX IDX_D0234567BAD26311 (tag_id), PRIMARY KEY(document_id, tag_id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'
+        );
+        $this->addSql('CREATE TABLE tag (id int AUTO_INCREMENT NOT NULL, name varchar(50) NOT NULL, PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'
+        );
+        $this->addSql('CREATE TABLE user (id INT AUTO_INCREMENT NOT NULL, username VARCHAR(180) NOT NULL, roles LONGTEXT NOT NULL COMMENT \'(DC2Type:json)\', password VARCHAR(255) NOT NULL, UNIQUE INDEX UNIQ_8D93D649F85E0677 (username), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'
+        );
+        $this->addSql('CREATE TABLE messenger_messages (id bigint AUTO_INCREMENT NOT NULL, body longtext NOT NULL, headers longtext NOT NULL, queue_name varchar(190) NOT NULL, created_at datetime NOT NULL, available_at datetime NOT NULL, delivered_at datetime DEFAULT NULL, INDEX IDX_75EA56E0FB7336F0 (queue_name), INDEX IDX_75EA56E0E3BD61CE (available_at), INDEX IDX_75EA56E016BA31DB (delivered_at), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'
+        );
+        $this->addSql('ALTER TABLE document ADD CONSTRAINT FK_D8698A76A76ED395 FOREIGN KEY (user_id) REFERENCES user (id)');
+        $this->addSql('ALTER TABLE document_tag ADD CONSTRAINT FK_D0234567C33F7837 FOREIGN KEY (document_id) REFERENCES document (id) ON DELETE CASCADE');
+        $this->addSql('ALTER TABLE document_tag ADD CONSTRAINT FK_D0234567BAD26311 FOREIGN KEY (tag_id) REFERENCES tag (id) ON DELETE CASCADE');
+    }
+
+    public function down (Schema $schema): void {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE document DROP FOREIGN KEY FK_D8698A76A76ED395');
+        $this->addSql('ALTER TABLE document_tag DROP FOREIGN KEY FK_D0234567C33F7837');
+        $this->addSql('ALTER TABLE document_tag DROP FOREIGN KEY FK_D0234567BAD26311');
+        $this->addSql('DROP TABLE document');
+        $this->addSql('DROP TABLE document_tag');
+        $this->addSql('DROP TABLE tag');
+        $this->addSql('DROP TABLE user');
+        $this->addSql('DROP TABLE messenger_messages');
+    }
+}
diff --git a/src/Entity/Document.php b/src/Entity/Document.php
index 18fd530..c5c1000 100644
--- a/src/Entity/Document.php
+++ b/src/Entity/Document.php
@@ -7,6 +7,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\DBAL\Types\Types;
 use Doctrine\ORM\Mapping as ORM;
+use Gedmo\Mapping\Annotation\Timestampable;
 
 #[ORM\Entity(repositoryClass: DocumentRepository::class)]
 class Document
@@ -26,17 +27,18 @@ class Document
     #[ORM\Column(type: Types::TEXT, nullable: true)]
     private ?string $description = null;
 
-    #[ORM\Column(type: Types::DATETIME_MUTABLE)]
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE)]
+    #[Timestampable(on: 'create')]
     private ?\DateTimeInterface $creation = null;
 
-    #[ORM\Column(type: Types::DATETIME_MUTABLE)]
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE)]
+    #[Timestampable]
     private ?\DateTimeInterface $modification = null;
 
     #[ORM\ManyToMany(targetEntity: Tag::class, inversedBy: 'documents')]
     private Collection $tags;
 
-    public function __construct()
-    {
+    public function __construct () {
         $this->tags = new ArrayCollection();
     }
 
diff --git a/symfony.lock b/symfony.lock
index 938fa01..a29fe66 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -49,6 +49,18 @@
             "./tests/bootstrap.php"
         ]
     },
+    "stof/doctrine-extensions-bundle": {
+        "version": "1.7",
+        "recipe": {
+            "repo": "github.com/symfony/recipes-contrib",
+            "branch": "main",
+            "version": "1.2",
+            "ref": "e805aba9eff5372e2d149a9ff56566769e22819d"
+        },
+        "files": [
+            "./config/packages/stof_doctrine_extensions.yaml"
+        ]
+    },
     "symfony/console": {
         "version": "6.2",
         "recipe": {