Extending the database

For many customization projects, the first task is to extend the database so that it supports the other UI or API changes that you make later.

Review this topic for the following information:

Important guidelines about what you can and cannot change in the database.
Information about modifying APIs. If you modify database tables so that any APIs are impacted, you must extend the templates of those APIs or you cannot store or retrieve data from the database. This step is required if table modifications impact an API.