Data Dictionary/Directories

A DD/D is a centralized repository of information about data descriptions such as meaning, relationships to other data, responsibility, origin, usage, and format. It is a basic tool within the database environment that assists company management, data-base administrators, systems analysts, and application programmers in effectively planning, controlling, and evaluating the collection, storage, and use of the data resource. This particular usage of a DD/D is termed the management use mode.’”