A data dictionary, or metadata repository, as defined in the IBM Dictionary of Computing, is a "centralized repository of information about data such as meaning, relationships to other data, origin, usage, and format." The term may have one of several closely related meanings pertaining to databases and database management systems (DBMS):
- a document describing a database or collection of databases
- an integral component of a DBMS that is required to determine its structure
- a piece of middleware that extends or supplants the native data dictionary of a DBMS
Read more about Data Dictionary: Documentation, Middleware
Famous quotes containing the words data and/or dictionary:
“This city is neither a jungle nor the moon.... In long shot: a cosmic smudge, a conglomerate of bleeding energies. Close up, it is a fairly legible printed circuit, a transistorized labyrinth of beastly tracks, a data bank for asthmatic voice-prints.”
—Susan Sontag (b. 1933)
“The reputation of a man is like his shadow; it sometimes follows and sometimes precedes him, sometimes longer and sometimes shorter than his natural size.”
—French Proverb. Quoted in Dictionary of Similes, ed. Frank J. Wilstach (1916)