System Analysis and Design
The rule(s) to follow in constructing decision tables is (are):

the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.
a decision should be given a name
standardized language must be used consistently.
all of the listed here

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System Analysis and Design
Cost-Benefit analysis

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

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System Analysis and Design
Indexed-Sequential organization

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

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