What Is a Data Dictionary

Multiple Choice

What is a data dictionary?

A) It is a special file, stored in an application program, that provides instructions for processing data.
B) It is a special file, stored in data definition language, that makes a data element in one schema correspond to an element in another schema.
C) It is a special file that is required to initiate the processing of data.
D) It is a special file, stored in the database itself, that provides metadata on the description, structure, and type of each data element stored in the database.