diff --git a/.junie/guidelines.md b/.junie/guidelines.md
index 8ef0b7c8d..eace2f4fa 100644
--- a/.junie/guidelines.md
+++ b/.junie/guidelines.md
@@ -22,7 +22,7 @@ Chill is a comprehensive web application built as a set of Symfony bundles. It i
 - **Backend**: PHP 8.3+, Symfony 5.4
 - **Frontend**: JavaScript/TypeScript, Vue.js 3, Bootstrap 5
 - **Build Tools**: Webpack Encore, Yarn
-- **Database**: PostgreSQL with materialized views
+- **Database**: PostgreSQL with materialized views. We do not support other databases.
 - **Other Services**: Redis, AMQP (RabbitMQ), SMTP
 
 ## Project Structure
@@ -149,6 +149,42 @@ Key configuration files:
 - `package.json`: JavaScript dependencies and scripts
 - `.env`: Default environment variables. Must usually not be updated: use `.env.local` instead.
 
+### Database migrations
+
+Each time a doctrine entity is created, we generate migration to adapt the database.
+
+The migration are created using the command `symfony console doctrine:migrations:diff --no-interaction --namespace <namespace>`, where the namespace is the relevant namespace for migration. As this is a bash script, do not forget to quote the `\` (`\` must become `\\` in your command).
+
+Each bundle has his own namespace for migration (always ask me to confirm that command, with a list of updated / created entities so that I can confirm you that it is ok):
+
+- `Chill\Bundle\ActivityBundle` writes migrations to `Chill\Migrations\Activity`;
+- `Chill\Bundle\BudgetBundle` writes migrations to `Chill\Migrations\Budget`;
+- `Chill\Bundle\CustomFieldsBundle` writes migrations to `Chill\Migrations\CustomFields`;
+- `Chill\Bundle\DocGeneratorBundle` writes migrations to `Chill\Migrations\DocGenerator`;
+- `Chill\Bundle\DocStoreBundle` writes migrations to `Chill\Migrations\DocStore`;
+- `Chill\Bundle\EventBundle` writes migrations to `Chill\Migrations\Event`;
+- `Chill\Bundle\CalendarBundle` writes migrations to `Chill\Migrations\Calendar`;
+- `Chill\Bundle\FamilyMembersBundle` writes migrations to `Chill\Migrations\FamilyMembers`;
+- `Chill\Bundle\FranceTravailApiBundle` writes migrations to `Chill\Migrations\FranceTravailApi`;
+- `Chill\Bundle\JobBundle` writes migrations to `Chill\Migrations\Job`;
+- `Chill\Bundle\MainBundle` writes migrations to `Chill\Migrations\Main`;
+- `Chill\Bundle\PersonBundle` writes migrations to `Chill\Migrations\Person`;
+- `Chill\Bundle\ReportBundle` writes migrations to `Chill\Migrations\Report`;
+- `Chill\Bundle\TaskBundle` writes migrations to `Chill\Migrations\Task`;
+- `Chill\Bundle\ThirdPartyBundle` writes migrations to `Chill\Migrations\ThirdParty`;
+- `Chill\Bundle\TicketBundle` writes migrations to `Chill\Migrations\Ticket`;
+- `Chill\Bundle\WopiBundle` writes migrations to `Chill\Migrations\Wopi`;
+
+Once created the, comment's classes should be removed and a description of the changes made to the entities should be added to the migrations, using the `getDescription` method. The migration should not be cleaned by any artificial intelligence, as modifying this migration is error prone.
+
+### Guidelines related to code structure and requirements
+
+#### Usage of clock
+
+When we need to use a DateTime or DateTimeImmutable that need to express "now", we prefer the usage of
+`Symfony\Component\Clock\ClockInterface`, where possible. This is usually not possible in doctrine entities,
+where injection does not work when restoring an entity from database, but usually possible in services.
+
 ### Testing Information
 
 The project uses PHPUnit for testing. Each bundle has its own test suite, and there's also a global test suite at the root level.
@@ -218,7 +254,7 @@ class TicketTest extends TestCase
 
 #### Test Database
 
-For tests that require a database, the project uses an in-memory SQLite database by default. You can configure a different database for testing in the `.env.test` file.
+For tests that require a database, the project uses postgresql database filled by fixtures (usage of doctrine-fixtures). You can configure a different database for testing in the `.env.test` file.
 
 ### Code Quality Tools