System Analysis and Design
A menu-driven system

presents options and allows the user to make selections
increases the operator's work
is required only for on-line systems
can be used only by computer professionals
None of these

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System Analysis and Design
Data Definition Language (DDL)

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

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System Analysis and Design
The term Parallel Run refers to

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

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