System Analysis and Design
Data Definition Language (DDL)

describes how data are structured in the data base
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

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System Analysis and Design
In the system concepts, term Integration

implies structure and order
refers to the holism of systems
means that parts of the computer system depend on one another
refers to the manner in which each component functions with other components of the system.

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System Analysis and Design
Unit testing is

making sure that the new programs do in fact process certain transactions according to Specifications
testing changes made in an existing or a new program
running the system with line data by the actual user
is checking the logic of one or more programs in the candidate system
None of these

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