System Analysis and Design
In Data structure, main characteristic of "ring" is :

All of these
None of these
first record points only to the last record
many records point to one record
last, record points to the first record

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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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