Overview
A database is an integrated, centralized group of data files and program utilities that support an application. A dictionary is a special form of database that is used as a repository of information about the definition, structure, and usage of data. The dictionary does not contain the actual data.
The two levels of database and dictionary security are available
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Physical file security
Physical file security limits the programs and users that can access designated database or dictionary files. Physical file security is enforced by the system software. Physical file security limits access to database files by both database and non-database users.
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Logical security
Logical security limits access to designated data in a database or dictionary. Logical security limits access to the information in the database by users and programs.
The main focus of this section is physical file security. An overview of the logical security mechanisms is provided, along with appropriate pointers to the manuals containing the detailed information.
