2.2 Docbase
Docbase should be thought of as a huge centralized repository that stores content and metadata in the form of 'objects' and their properties.
Metadata for the content is nothing but the different attributes that describe the content; for example its owner, creation date, version number, etc.
Some attributes can be 'single-valued' having just one value, for example the name of the content, while others can be 'multi-valued' having multiple values, for example the keywords describing the content.
Documentum relies on the underlying RDBMS to store the metadata for various objects in various tables. On the other hand, the content files for the numerous objects are stored in any of these storage types:
The host server's OS file system
In an RDBMS as BLOBs (Binary Large Objects)
A content storage device (for example: EMC Centera)
An external system outside Documentum's boundaries
Additionally, Content Server has an embedded full-text search engine, Verity, and so the Docbase repository contains...