System Analysis and Design
Direct-access organization

uses an index for each key type
means storing records in contiguous blocks according to a key.
Stores records sequentially but uses an index to locate records
has records placed randomly throughout the file

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System Analysis and Design
The approach used in top-down analysis and and design is

None of these
to identify a top level function and then create a hierarchy of lower level modules and components
to prepare flowcharts after programming has been completed
All of these
to identify the top level functions by combining many smaller components into a single entity.

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System Analysis and Design
Rapid prototyping proves the quality of a design by

having a program simulate the real system
having a data flow diagram
both (a) and (b)
having the system analyst present an overview of the design to users, programmers, and consultants
None of these

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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
is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user
None of these

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