An SQL content repository must contain:
- One item descriptor that defines repository items that act as folders (the - folderitem descriptor)
- One or more item descriptors that define content repository items (the - contentitem descriptors).
Items defined by the content item descriptor implement the atg.repository.content.ContentRepositoryItem interface. Items defined by the folder item descriptor implement the atg.repository.content.FolderItem interface, as well as the atg.repository.MutableRepositoryItem interface.

