A data dictionary is (generally) a read-only
set of tables and views that holds metadata
- used in a database
management system. The data dictionary may be considered a database
in its own right.
Amongst other things, a Data Dictionary holds the following information:
s, Roles and Privileges
One benefit of a well prepared data dictionary is a consistency between data items across different table
several tables may hold telephone numbers, using a data dictionary the format of this telephone number field will be consistent.
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