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How do you handle database migrations in Zend Framework?

How do you handle database migrations in Zend Framework?

Answer: In Zend Framework, database migrations can be handled using the `ZendDbAdapter` and `ZendDbSql` components. Typically, you would:

1. Create Migration Scripts: Write PHP scripts for each migration that define the changes to the database schema (e.g., creating tables, altering columns).

2. Version Control: Use a naming convention to version your migration files and keep track of which migrations have been applied.

3. Execute Migrations: Create a migration management tool (or use existing libraries) that reads the migration files and executes them in order. This tool can update a migration history table in your database to track applied migrations.

4. Rollback Mechanism: Implement a rollback feature in your migration scripts to undo changes if necessary.

5. Testing: Always test migrations in a development environment before applying them to production to ensure they run without errors.

Using these steps helps maintain database integrity while allowing for structured schema evolution.

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