System Analysis and Design
Sequential organization

None of these
Stores records sequentially but uses an index to locate records
has records placed randomly throughout the file
uses an index for each key type
means storing records in contiguous blocks according to a key.

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System Analysis and Design
Cost-Benefit analysis

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

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