Container-managed persistence

Container-managed persistence is a system where the application's environment (the container) automatically handles saving and retrieving data related to its objects. Instead of developers manually writing code to store or fetch data from a database, the container manages these tasks behind the scenes. For example, when an object representing a user is created or modified, the container ensures that these changes are saved without extra coding by the developer. This simplifies application development, improves consistency, and reduces errors, allowing developers to focus more on business logic rather than data management details.