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

a decision should be given a name
all of the listed here
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.
standardized language must be used consistently.

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System Analysis and Design
The black-box concept:

assumes that inputs and outputs will remain stable
is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.
None of these
assumes that the black box is independent
All of these

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