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

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

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System Analysis and Design
In Decision trees

All of these
the root is drawn on the left and is the starting point on the decision sequence.
None of these
the branch depends on the condition and decisions to made
nodes represent the conditions, with the right side of tree listing the actions to be taken

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