System Analysis and Design
Indexed-Sequential organization

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

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System Analysis and Design
Cost-Benefit analysis

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

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