diff --git a/composer.json b/composer.json
index 141548d55..9c3881543 100644
--- a/composer.json
+++ b/composer.json
@@ -21,6 +21,7 @@
   "require": {
     "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
     "doctrine/dbal": "^3.8.1|^4.0.0",
+    "doctrine/migrations": "^3.3.2",
     "patchlevel/hydrator": "^1.1.0",
     "patchlevel/worker": "^1.1.1",
     "psr/cache": "^2.0.0|^3.0.0",
@@ -35,7 +36,6 @@
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     "infection/infection": "^0.27.0",
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@@ -51,11 +51,7 @@
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-    "symfony/messenger": "for an advanced event bus"
-  },
-  "conflict": {
-    "doctrine/migrations": "<3.3"
+    "patchlevel/event-sourcing-psalm-plugin": "for psalm support"
   },
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diff --git a/composer.lock b/composer.lock
index 1c8381657..98522e433 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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@@ -216,6 +216,199 @@
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+                    "email": "roman@code-factory.org"
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+                    "email": "kontakt@beberlei.de"
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+                    "email": "jonwage@gmail.com"
+                },
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+                    "email": "schmittjoh@gmail.com"
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+                    "email": "ocramius@gmail.com"
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+                "event dispatcher",
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+                "symfony/yaml": "^5.4 || ^6.0 || ^7.0"
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+                    "email": "jonwage@gmail.com"
+                },
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+                    "email": "contact@mikesimonson.com"
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+            "time": "2023-12-05T11:35:05+00:00"
+        },
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             "version": "1.1.0",
@@ -1538,6 +1731,68 @@
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             "time": "2023-12-26T14:02:43+00:00"
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+            "version": "v7.0.3",
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+            "autoload": {
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+                    "homepage": "https://symfony.com/contributors"
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+            "description": "Provides a way to profile code",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/stopwatch/tree/v7.0.3"
+            },
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+            "time": "2024-01-23T15:02:46+00:00"
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@@ -1623,6 +1878,80 @@
                 }
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+                "url": "https://github.com/symfony/var-exporter.git",
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+                "shasum": ""
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+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Allows exporting any serializable PHP data structure to plain PHP code",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "clone",
+                "construct",
+                "export",
+                "hydrate",
+                "instantiate",
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+                "proxy",
+                "serialize"
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@@ -2476,107 +2805,16 @@
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-            "homepage": "https://www.doctrine-project.org/projects/event-manager.html",
+            "homepage": "https://www.doctrine-project.org/projects/collections.html",
             "keywords": [
-                "event",
-                "event dispatcher",
-                "event manager",
-                "event system",
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+                "php"
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-                "source": "https://github.com/doctrine/event-manager/tree/2.0.0"
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@@ -2588,24 +2826,24 @@
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-            "time": "2022-10-12T20:59:15+00:00"
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@@ -2667,7 +2905,7 @@
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@@ -2683,7 +2921,7 @@
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@@ -2832,108 +3070,6 @@
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-                {
-                    "name": "Benjamin Eberlei",
-                    "email": "kontakt@beberlei.de"
-                },
-                {
-                    "name": "Jonathan Wage",
-                    "email": "jonwage@gmail.com"
-                },
-                {
-                    "name": "Michael Simonson",
-                    "email": "contact@mikesimonson.com"
-                }
-            ],
-            "description": "PHP Doctrine Migrations project offer additional functionality on top of the database abstraction layer (DBAL) for versioning your database schema and easily deploying changes to it. It is a very easy to use and a powerful tool.",
-            "homepage": "https://www.doctrine-project.org/projects/migrations.html",
-            "keywords": [
-                "database",
-                "dbal",
-                "migrations"
-            ],
-            "support": {
-                "issues": "https://github.com/doctrine/migrations/issues",
-                "source": "https://github.com/doctrine/migrations/tree/3.7.2"
-            },
-            "funding": [
-                {
-                    "url": "https://www.doctrine-project.org/sponsorship.html",
-                    "type": "custom"
-                },
-                {
-                    "url": "https://www.patreon.com/phpdoctrine",
-                    "type": "patreon"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/doctrine%2Fmigrations",
-                    "type": "tidelift"
-                }
-            ],
-            "time": "2023-12-05T11:35:05+00:00"
-        },
         {
             "name": "doctrine/orm",
             "version": "3.0.0",
@@ -4439,16 +4575,16 @@
         },
         {
             "name": "phpdocumentor/type-resolver",
-            "version": "1.8.0",
+            "version": "1.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "fad452781b3d774e3337b0c0b245dd8e5a4455fc"
+                "reference": "bc3dc91a5e9b14aa06d1d9e90647c5c5a2cc5353"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/fad452781b3d774e3337b0c0b245dd8e5a4455fc",
-                "reference": "fad452781b3d774e3337b0c0b245dd8e5a4455fc",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/bc3dc91a5e9b14aa06d1d9e90647c5c5a2cc5353",
+                "reference": "bc3dc91a5e9b14aa06d1d9e90647c5c5a2cc5353",
                 "shasum": ""
             },
             "require": {
@@ -4491,9 +4627,9 @@
             "description": "A PSR-5 based resolver of Class names, Types and Structural Element Names",
             "support": {
                 "issues": "https://github.com/phpDocumentor/TypeResolver/issues",
-                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.8.0"
+                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.8.1"
             },
-            "time": "2024-01-11T11:49:22+00:00"
+            "time": "2024-01-18T19:15:27+00:00"
         },
         {
             "name": "phpspec/prophecy",
@@ -4665,16 +4801,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.10.58",
+            "version": "1.10.59",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "a23518379ec4defd9e47cbf81019526861623ec2"
+                "reference": "e607609388d3a6d418a50a49f7940e8086798281"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/a23518379ec4defd9e47cbf81019526861623ec2",
-                "reference": "a23518379ec4defd9e47cbf81019526861623ec2",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/e607609388d3a6d418a50a49f7940e8086798281",
+                "reference": "e607609388d3a6d418a50a49f7940e8086798281",
                 "shasum": ""
             },
             "require": {
@@ -4723,7 +4859,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-02-12T20:02:57+00:00"
+            "time": "2024-02-20T13:59:13+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -7149,68 +7285,6 @@
             ],
             "time": "2024-01-23T15:02:46+00:00"
         },
-        {
-            "name": "symfony/stopwatch",
-            "version": "v7.0.3",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "983900d6fddf2b0cbaacacbbad07610854bd8112"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/983900d6fddf2b0cbaacacbbad07610854bd8112",
-                "reference": "983900d6fddf2b0cbaacacbbad07610854bd8112",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=8.2",
-                "symfony/service-contracts": "^2.5|^3"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\Stopwatch\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
-            ],
-            "description": "Provides a way to profile code",
-            "homepage": "https://symfony.com",
-            "support": {
-                "source": "https://github.com/symfony/stopwatch/tree/v7.0.3"
-            },
-            "funding": [
-                {
-                    "url": "https://symfony.com/sponsor",
-                    "type": "custom"
-                },
-                {
-                    "url": "https://github.com/fabpot",
-                    "type": "github"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
-                    "type": "tidelift"
-                }
-            ],
-            "time": "2024-01-23T15:02:46+00:00"
-        },
         {
             "name": "symfony/var-dumper",
             "version": "v7.0.3",
@@ -7294,80 +7368,6 @@
             ],
             "time": "2024-01-23T15:02:46+00:00"
         },
-        {
-            "name": "symfony/var-exporter",
-            "version": "v7.0.3",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/var-exporter.git",
-                "reference": "1fb79308cb5fc2b44bff6e8af10a5af6812e05b8"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-exporter/zipball/1fb79308cb5fc2b44bff6e8af10a5af6812e05b8",
-                "reference": "1fb79308cb5fc2b44bff6e8af10a5af6812e05b8",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=8.2"
-            },
-            "require-dev": {
-                "symfony/var-dumper": "^6.4|^7.0"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\VarExporter\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Nicolas Grekas",
-                    "email": "p@tchwork.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
-            ],
-            "description": "Allows exporting any serializable PHP data structure to plain PHP code",
-            "homepage": "https://symfony.com",
-            "keywords": [
-                "clone",
-                "construct",
-                "export",
-                "hydrate",
-                "instantiate",
-                "lazy-loading",
-                "proxy",
-                "serialize"
-            ],
-            "support": {
-                "source": "https://github.com/symfony/var-exporter/tree/v7.0.3"
-            },
-            "funding": [
-                {
-                    "url": "https://symfony.com/sponsor",
-                    "type": "custom"
-                },
-                {
-                    "url": "https://github.com/fabpot",
-                    "type": "github"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
-                    "type": "tidelift"
-                }
-            ],
-            "time": "2024-01-23T15:02:46+00:00"
-        },
         {
             "name": "thecodingmachine/safe",
             "version": "v2.5.0",
diff --git a/docs/mkdocs.yml b/docs/mkdocs.yml
index 0b14915ef..2633c76b1 100644
--- a/docs/mkdocs.yml
+++ b/docs/mkdocs.yml
@@ -98,5 +98,4 @@ nav:
     - Testing: testing.md
   - Other / Tools:
     - CLI: cli.md
-    - Schema Migration: migration.md
     - Watch Server: watch_server.md
diff --git a/docs/pages/cli.md b/docs/pages/cli.md
index cdfc36bb8..2de5f0d5d 100644
--- a/docs/pages/cli.md
+++ b/docs/pages/cli.md
@@ -1,9 +1,13 @@
 # CLI
 
-The library also offers `symfony` cli commands to create or delete `databases`. 
-It is also possible to manage the `schema` and `projections`. 
-These commands are `optional` and only wrap existing functionalities 
-that are also available in this way.
+This library provides a `cli` to manage the `event-sourcing` functionalities.
+
+You can:
+
+* Create and delete `databases`
+* Create, update and delete `schemas`
+* Manage `projections`
+* Consume `outbox` messages
 
 ## Database commands
 
@@ -22,35 +26,23 @@ The database schema can also be created, updated and dropped.
 
 !!! note
 
-    You can also register doctrine migration commands,
-    see the [store](./store.md) documentation for this.
+    You can also register doctrine migration commands.
 
 ## Projection commands
 
-The creation, deletion and rebuilding of the projections is also possible via the cli.
-
-* ProjectionCreateCommand: `event-sourcing:projection:create`
-* ProjectionDropCommand: `event-sourcing:projection:drop`
-* ProjectionRebuildCommand: `event-sourcing:projection:rebuild`
-
-!!! note
-
-    The [pipeline](./pipeline.md) will be used to rebuild the projection.
-
-## Projectionist commands
-
 To manage your projectors there are the following cli commands.
 
-* ProjectionistBootCommand: `event-sourcing:projectionist:boot`
-* ProjectionistReactiveCommand: `event-sourcing:projectionist:reactive`
-* ProjectionistRemoveCommand: `event-sourcing:projectionist:remove`
-* ProjectionistRunCommand: `event-sourcing:projectionist:run`
-* ProjectionistStatusCommand: `event-sourcing:projectionist:status`
-* ProjectionistTeardownCommand: `event-sourcing:projectionist:teardown`
+* ProjectionBootCommand: `event-sourcing:projection:boot`
+* ProjectionReactiveCommand: `event-sourcing:projection:reactive`
+* ProjectionRebuildCommand: `event-sourcing:projection:rebuild`
+* ProjectionRemoveCommand: `event-sourcing:projection:remove`
+* ProjectionRunCommand: `event-sourcing:projection:run`
+* ProjectionStatusCommand: `event-sourcing:projection:status`
+* ProjectionTeardownCommand: `event-sourcing:projection:teardown`
 
 !!! note
 
-    You can find out more about projectionist [here](projectionist.md).
+    You can find out more about projections [here](projection.md).
 
 ## Outbox commands
 
@@ -74,7 +66,7 @@ use Patchlevel\EventSourcing\Schema\DoctrineSchemaManager;
 use Symfony\Component\Console\Application;
 
 $store = /* define your doctrine store */;
-$projectionRepository = /* create a project repository */;
+$projectionist = /* create projectionist */;
 
 $cli = new Application('Event-Sourcing CLI');
 $cli->setCatchExceptions(true);
@@ -85,9 +77,13 @@ $schemaManager = new DoctrineSchemaManager();
 $cli->addCommands(array(
     new Command\DatabaseCreateCommand($store, $doctrineHelper),
     new Command\DatabaseDropCommand($store, $doctrineHelper),
-    new Command\ProjectionCreateCommand($projectionRepository),
-    new Command\ProjectionDropCommand($projectionRepository),
-    new Command\ProjectionRebuildCommand($store, $projectionRepository),
+    new Command\ProjectionBootCommand($projectionist),
+    new Command\ProjectionRunCommand($projectionist),
+    new Command\ProjectionTeardownCommand($projectionist),
+    new Command\ProjectionRemoveCommand($projectionist),
+    new Command\ProjectionReactivateCommand($projectionist),
+    new Command\ProjectionRebuildCommand($projectionist),
+    new Command\ProjectionStatusCommand($projectionist),
     new Command\SchemaCreateCommand($store, $schemaManager),
     new Command\SchemaDropCommand($store, $schemaManager),
     new Command\SchemaUpdateCommand($store, $schemaManager),
@@ -96,7 +92,55 @@ $cli->addCommands(array(
 $cli->run();
 ```
 
+### Doctrine Migrations
+
+If you want to use doctrine migrations, you can register the commands like this:
+
+```php
+use Doctrine\DBAL\DriverManager;
+use Doctrine\Migrations\DependencyFactory;
+use Doctrine\Migrations\Configuration\Migration\PhpFile;
+use Doctrine\Migrations\Configuration\Connection\ExistingConnection;
+use Doctrine\Migrations\Tools\Console\Command;
+use Symfony\Component\Console\Application;
+use Patchlevel\EventSourcing\Schema\DoctrineMigrationSchemaProvider;
+use Patchlevel\EventSourcing\Schema\DoctrineSchemaDirector;
+
+$connection = /* create connection */
+$store = /* define your doctrine store */;
+
+$schemaDirector = new DoctrineSchemaDirector(
+    $store,
+    $connection
+);
+
+$migrationConfig = /* define your migration config */;
+
+
+$dependencyFactory = DependencyFactory::fromConnection(
+    $migrationConfig, 
+    new ExistingConnection($connection)
+);
+
+
+$dependencyFactory->setService(
+    SchemaProvider::class, 
+    new DoctrineMigrationSchemaProvider($schemaDirector)
+);
+
+$cli->addCommands([    
+    new Command\ExecuteCommand($dependencyFactory, 'event-sourcing:migrations:execute'),
+    new Command\GenerateCommand($dependencyFactory, 'event-sourcing:migrations:generate'),
+    new Command\LatestCommand($dependencyFactory, 'event-sourcing:migrations:latest'),
+    new Command\ListCommand($dependencyFactory, 'event-sourcing:migrations:list'),
+    new Command\MigrateCommand($dependencyFactory, 'event-sourcing:migrations:migrate'),
+    new Command\DiffCommand($dependencyFactory, 'event-sourcing:migrations:diff'),
+    new Command\StatusCommand($dependencyFactory, 'event-sourcing:migrations:status'),
+    new Command\VersionCommand($dependencyFactory, 'event-sourcing:migrations:version'),
+]);
+```
+
 !!! note
 
-    You can also register doctrine migration commands, 
-    see the [store](./store.md) documentation for this.
+    Here you can find more information on how to 
+    [configure doctrine migration](https://www.doctrine-project.org/projects/doctrine-migrations/en/3.3/reference/custom-configuration.html).
diff --git a/docs/pages/migration.md b/docs/pages/migration.md
deleted file mode 100644
index 8f67e6e70..000000000
--- a/docs/pages/migration.md
+++ /dev/null
@@ -1,107 +0,0 @@
-# Migration
-
-You can use doctrine migration, which is known from doctrine orm, to create your schema and keep it in sync.
-
-!!! warning
-
-    To use the migration CLI commands, you have to configure the [CLI](cli.md) beforehand.
-
-## Installation
-
-In order to be able to use `doctrine/migrations`,
-you have to install the associated package.
-
-```bash
-composer require doctrine/migrations
-```
-
-## Configure Migration Schema Provider
-
-We have added a `schema provider` for doctrine migrations
-so that you just have to plug the whole thing together.
-
-```php
-use Patchlevel\EventSourcing\Schema\DoctrineMigrationSchemaProvider;
-use Patchlevel\EventSourcing\Schema\DoctrineSchemaDirector;
-
-$schemaDirector = new DoctrineSchemaDirector(
-    $store,
-    $connection
-);
-
-$schemaProvider = new DoctrineMigrationSchemaProvider($schemaDirector);
-```
-
-## CLI example
-
-You can plug this together, for example, as follows to create CLI applications like `cli.php`:
-
-```php
-use Doctrine\DBAL\DriverManager;
-use Doctrine\Migrations\DependencyFactory;
-use Doctrine\Migrations\Configuration\Migration\PhpFile;
-use Doctrine\Migrations\Configuration\Connection\ExistingConnection;
-use Doctrine\Migrations\Tools\Console\Command;
-use Symfony\Component\Console\Application;
-use Patchlevel\EventSourcing\Schema\DoctrineMigrationSchemaProvider;
-use Patchlevel\EventSourcing\Schema\DoctrineSchemaDirector;
-
-$connection = DriverManager::getConnection([
-    'url' => 'mysql://user:secret@localhost/app'
-]);
-
-$config = new PhpFile('migrations.php');
-
-$dependencyFactory = DependencyFactory::fromConnection(
-    $config, 
-    new ExistingConnection($connection)
-);
-
-$schemaDirector = new DoctrineSchemaDirector(
-    $store,
-    $connection
-);
-
-$dependencyFactory->setService(
-    SchemaProvider::class, 
-    new DoctrineMigrationSchemaProvider($schemaDirector)
-);
-
-$cli = new Application('Event-Sourcing CLI');
-$cli->setCatchExceptions(true);
-
-$cli->addCommands([
-
-    // other cli commands
-    
-    new Command\ExecuteCommand($dependencyFactory, 'event-sourcing:migrations:execute'),
-    new Command\GenerateCommand($dependencyFactory, 'event-sourcing:migrations:generate'),
-    new Command\LatestCommand($dependencyFactory, 'event-sourcing:migrations:latest'),
-    new Command\ListCommand($dependencyFactory, 'event-sourcing:migrations:list'),
-    new Command\MigrateCommand($dependencyFactory, 'event-sourcing:migrations:migrate'),
-    new Command\DiffCommand($dependencyFactory, 'event-sourcing:migrations:diff'),
-    new Command\StatusCommand($dependencyFactory, 'event-sourcing:migrations:status'),
-    new Command\VersionCommand($dependencyFactory, 'event-sourcing:migrations:version'),
-]);
-
-$cli->run();
-```
-
-!!! note
-
-    Here you can find more information on how to 
-    [configure doctrine migration](https://www.doctrine-project.org/projects/doctrine-migrations/en/3.3/reference/custom-configuration.html).
-
-
-## Migration commands
-
-There are some commands to use the migration feature.
-
-* ExecuteCommand: `event-sourcing:migrations:execute`
-* GenerateCommand: `event-sourcing:migrations:generate`
-* LatestCommand: `event-sourcing:migrations:latest`
-* ListCommand: `event-sourcing:migrations:list`
-* MigrateCommand: `event-sourcing:migrations:migrate`
-* DiffCommand: `event-sourcing:migrations:diff`
-* StatusCommand: `event-sourcing:migrations:status`
-* VersionCommand: `event-sourcing:migrations:version`
diff --git a/docs/pages/store.md b/docs/pages/store.md
index 995fc485e..10a7b3549 100644
--- a/docs/pages/store.md
+++ b/docs/pages/store.md
@@ -1,7 +1,14 @@
 # Store
 
-In the end, the events/messages have to be saved somewhere.
-The library is based on [doctrine dbal](https://www.doctrine-project.org/projects/dbal.html).
+In the end, the messages have to be saved somewhere.
+Each message contains an event and the associated headers.
+
+!!! note
+
+    More information about the message can be found [here](event_bus.md).
+
+The store is optimized to efficiently store and load events for aggregates.
+We currently only offer one [doctrine dbal](https://www.doctrine-project.org/projects/dbal.html) store.
 
 ## Create DBAL connection
 
@@ -20,15 +27,10 @@ $connection = DriverManager::getConnection([
     You can find out more about how to create a connection 
     [here](https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html)
 
-## Store types
-
-We only offer one Doctrine Dbal Store by default. But you can implement your own store if you want to.
+## Configure Store
 
-### Doctrine DBAL Store
-
-With the `DoctrineDbalStore` everything is saved in one table.
-The dbal connection is needed, a mapping of the aggregate class and aggregate name
-and the table name.
+You can create a store with the `DoctrineDbalStore` class.
+The store needs a dbal connection, an event serializer, an aggregate registry and a table name.
 
 ```php
 use Patchlevel\EventSourcing\Metadata\AggregateRoot\AggregateRootRegistry;
@@ -45,31 +47,22 @@ $store = new DoctrineDbalStore(
 );
 ```
 
-## Transaction
-
-There is also the possibility of executing a function in a transaction. 
-Then dbal takes care of starting a transaction, committing it and then possibly rollback it again.
-
-```php
-$store->transactional(function () use ($command, $bankAccountRepository) {
-    $accountFrom = $bankAccountRepository->get($command->from());
-    $accountTo = $bankAccountRepository->get($command->to());
-    
-    $accountFrom->transferMoney($command->to(), $command->amount());
-    $accountTo->receiveMoney($command->from(), $command->amount());
-    
-    $bankAccountRepository->save($accountFrom);
-    $bankAccountRepository->save($accountTo);
-});
-```
-
-!!! tip
+## Schema
 
-    To ensure that all listeners are executed for the released events 
-    or that the listeners are not executed if the transaction fails, 
-    you can use the [outbox](outbox.md) pattern for it.
+The table structure of the `DoctrineDbalStore` looks like this:
 
-## Schema
+| Column           | Type     | Description                                      |
+|------------------|----------|--------------------------------------------------|
+| id               | bigint   | The index of the whole stream (autoincrement)    |
+| aggregate        | string   | The name of the aggregate                        |
+| aggregate_id     | string   | The id of the aggregate                          |
+| playhead         | int      | The current playhead of the aggregate            |
+| event            | string   | The name of the event                            |
+| payload          | json     | The payload of the event                         |
+| recorded_on      | datetime | The date when the event was recorded             |
+| new_stream_start | bool     | If the event is the first event of the aggregate |
+| archived         | bool     | If the event is archived                         |
+| custom_headers   | json     | Custom headers for the event                     |
 
 With the help of the `SchemaDirector`, the database structure can be created, updated and deleted.
 
@@ -77,7 +70,11 @@ With the help of the `SchemaDirector`, the database structure can be created, up
 
     You can also use doctrine [migration](migration.md) to create and keep your schema in sync.
 
-### Create SchemaDirector
+### Schema Director
+
+The `SchemaDirector` is responsible for creating, updating and deleting the database schema.
+The `DoctrineSchemaDirector` is a concrete implementation of the `SchemaDirector` for doctrine dbal.
+Additionally, it implements the `DryRunSchemaDirector` interface, to show the sql statements that would be executed.
 
 ```php
 use Patchlevel\EventSourcing\Schema\DoctrineSchemaDirector;
@@ -88,20 +85,224 @@ $schemaDirector = new DoctrineSchemaDirector(
 );
 ```
 
-### Create schema
+!!! note
+
+    How to setup cli commands for schema director can be found [here](cli.md).
+
+#### Create schema
+
+You can create the table from scratch using the `create` method.
 
 ```php
 $schemaDirector->create();
 ```
 
-### Update schema
+Or can give you back which SQL statements would be necessary for this.
+Either for a dry run, or to define your own migrations.
+
+```php
+$sql = $schemaDirector->dryRunCreate();
+```
+
+#### Update schema
+
+The update method compares the current state in the database and how the table should be structured.
+As a result, the diff is executed to bring the table to the desired state.
 
 ```php
 $schemaDirector->update();
 ```
 
-### Drop schema
+Or can give you back which SQL statements would be necessary for this.
+
+```php
+$sql = $schemaDirector->dryRunUpdate();
+```
+
+#### Drop schema
+
+You can also delete the table with the `drop` method.
 
 ```php
 $schemaDirector->drop();
 ```
+
+Or can give you back which SQL statements would be necessary for this.
+
+```php
+$sql = $schemaDirector->dryRunDrop();
+```
+
+### Doctrine Migrations
+
+You can use [doctrine migration](https://www.doctrine-project.org/projects/migrations.html),
+which is known from [doctrine orm](https://www.doctrine-project.org/projects/orm.html),
+to create your schema and keep it in sync.
+We have added a `DoctrineMigrationSchemaProvider` for doctrine migrations so that you just have to plug the whole thing
+together.
+
+```php
+use Patchlevel\EventSourcing\Schema\DoctrineMigrationSchemaProvider;
+use Patchlevel\EventSourcing\Schema\DoctrineSchemaDirector;
+
+// event sourcing schema director configuration
+
+$schemaDirector = new DoctrineSchemaDirector(
+    $store,
+    $connection
+);
+
+$schemaProvider = new DoctrineMigrationSchemaProvider($schemaDirector);
+
+// doctrine migration configuration
+
+$dependencyFactory = DependencyFactory::fromConnection(
+    $config, 
+    new ExistingConnection($connection)
+);
+
+$dependencyFactory->setService(
+    SchemaProvider::class, 
+    $schemaProvider
+);
+```
+
+!!! note
+
+    Here you can find more information on how to 
+    [configure doctrine migration](https://www.doctrine-project.org/projects/doctrine-migrations/en/3.3/reference/custom-configuration.html).
+
+!!! note
+
+    How to setup cli commands for doctrine migration can be found [here](cli.md).
+
+## Usage
+
+The store has a few methods to interact with the database.
+
+### Load
+
+You can load all events from an aggregate with the `load` method.
+This method returns a `Stream` object, which is a collection of events.
+
+```php
+$stream = $store->load();
+```
+
+The load method also has a few parameters to filter, limit and sort the events.
+
+```php
+use Patchlevel\EventSourcing\Store\Criteria;
+
+$stream = $store->load(
+    new Criteria() // filter criteria
+    100 // limit
+    50, // offset
+    true,  // latest first
+);
+```
+
+#### Criteria
+
+The `Criteria` object is used to filter the events.
+
+```php
+use Patchlevel\EventSourcing\Store\Criteria;
+
+$criteria = new Criteria(
+    aggregateName: 'profile',
+    aggregateId: 'e3e3e3e3-3e3e-3e3e-3e3e-3e3e3e3e3e3e',
+    fromIndex: 100,
+    fromPlayhead: 2,
+    archived: true,
+);
+```
+
+!!! note
+
+    The individual criteria must all apply, but not all of them have to be set.
+
+#### Stream
+
+The load method returns a `Stream` object and is a generator.
+This means that the messages are only loaded when they are needed.
+
+```php
+use Patchlevel\EventSourcing\Store\Stream;
+
+/** @var Stream $stream */
+$stream->index(); // get the index of the stream
+$stream->position(); // get the current position of the stream
+$stream->current(); // get the current event
+$stream->next(); // move to the next event
+$stream->end(); // check if the stream is at the end
+
+foreach ($stream as $message) {
+    $message->event(); // get the event
+}
+```
+
+!!! note
+
+    You can find more information about the `Message` object [here](event_bus.md).
+
+!!! warning
+
+    The stream cannot rewind, so you can only iterate over it once.
+    If you want to iterate over it again, you have to call the `load` method again.
+
+### Count
+
+You can count the number of events in the store with the `count` method.
+
+```php
+$count = $store->count();
+```
+
+The count method also has the possibility to filter the events.
+
+```php
+use Patchlevel\EventSourcing\Store\Criteria;
+
+$count = $store->count(
+    new Criteria() // filter criteria
+);
+```
+
+### Save
+
+You can save a message with the `save` method.
+
+```php
+$store->save($message);
+$store->save($message1, $message2, $message3);
+$store->save(...$messages);
+```
+
+!!! note
+
+    The saving happens in a transaction, so all messages are saved or none.    
+
+### Delete & Update
+
+It is not possible to delete or update events.
+In event sourcing, the events are immutable.
+
+### Transaction
+
+There is also the possibility of executing a function in a transaction.
+Then dbal takes care of starting a transaction, committing it and then possibly rollback it again.
+
+```php
+$store->transactional(function () use ($command, $bankAccountRepository) {
+    $accountFrom = $bankAccountRepository->get($command->from());
+    $accountTo = $bankAccountRepository->get($command->to());
+    
+    $accountFrom->transferMoney($command->to(), $command->amount());
+    $accountTo->receiveMoney($command->from(), $command->amount());
+    
+    $bankAccountRepository->save($accountFrom);
+    $bankAccountRepository->save($accountTo);
+});
+```
+
diff --git a/src/Store/DoctrineDbalStore.php b/src/Store/DoctrineDbalStore.php
index f68f9c664..c81bb3f93 100644
--- a/src/Store/DoctrineDbalStore.php
+++ b/src/Store/DoctrineDbalStore.php
@@ -256,7 +256,7 @@ public function configureSchema(Schema $schema, Connection $connection): void
         $table->addColumn('payload', Types::JSON)
             ->setNotnull(true);
         $table->addColumn('recorded_on', Types::DATETIMETZ_IMMUTABLE)
-            ->setNotnull(false);
+            ->setNotnull(true);
         $table->addColumn('new_stream_start', Types::BOOLEAN)
             ->setNotnull(true)
             ->setDefault(false);