October 2002
Beginner
864 pages
18h 41m
English
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An Introduction to the Data Dictionary
Every relational database has some form of data dictionary, or system catalog. (We use both terms in today's presentation.) A data dictionary is a system area within a database environment that contains information about the ingredients of a database. Data dictionaries include information such as database design, stored SQL code, user statistics, database processes, database growth, and database performance statistics.
The data dictionary has tables that contain database design information, which are populated upon the creation of the database and the execution of Data Definition Language (DDL) commands such as CREATE TABLE. This part of the data dictionary stores information about a table's columns and ...
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