A database about data and databases. A data dictionary holds the name, type, range of values, source and authorization for access for each data element in the organization's files and databases.

A "data dictionary" is data about data. It is what defines the items in your database (s) and can be looked to for definitions, structures, use, allowable content, and sometimes business rules ...

Favorite Oracle Data Dictionary Query Statements how-to Dec 8, 2009 3 mins Databases Technology Industry ...

Capturing “tribal knowledge”: A data dictionary captures “tribal knowledge” about manufacturing operations that might otherwise have been locked inside people’s heads. Accelerating user onboarding: ...