System Analysis and Design
Data Definition Language (DDL)

all of the listed here
describes how data are structured in the data base
determine how data must be structured to produce the user's view
specifies for the DBMS what is required; the techniques used to process data

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System Analysis and Design
The term Parallel Run refers to

the same job run on two different computer to test their speeds
None of these
All of these
the concurrent operation of an existing system and a new system
the processing of two different jobs initiated from two terminals.

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