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system catalog

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system catalog [′sis·təm ′kad·əl‚äg]
(computer science)
An index of all files controlled by the operating system of a large computer.

(database)system catalog - The data dictionary of a DBMS. The system catalogue stores meta-data including the schemas of the databases. It is a mini-database, and is usually stored using the DBMS itself in special tables called system tables. It maybe referred to as being "on line", as it is active, and can be queried by users like any other table.


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Lynch and Preston (1990) note that, by 1989, the Colorado Association of Research Libraries (CARL) catalogs and the University of California system catalog (MELVYL) were available on the Internet via the telnet protocol.
The new directed execution capability enables JCL to be validated while still in the test environment, even if test and production systems don't share the system catalog, DASD, or other resources.
1 -- Automated starting and stopping of SQLHost CICS Listener -- Password expiration management by receiving the number of days until a password expires and setting a new password if needed -- New views minimize the possibility of security constraints when accessing the DB2 system catalog
 
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