System Analysis and Design
Data Definition Language (DDL)

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

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System Analysis and Design
Cost-Benefit analysis

evaluates the tangible and non-tangible factors
All of these
None of these
estimates the hardware and software costs
compares the cost, with the benefits, of introducing a computer-based system

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