Decision Table Definition/Meaning:
A table that indicates actions to be taken under various conditions, the
decision being the selection between the alternative actions. Typically a decision table has one row for each
of the inputs to this decision and one column for each of the alternative
actions. An entry in the body of the table then indicates the values of the
input of the row for which it is permitted to select the action of the column.
An action is thus selected only if all inputs have appropriate values. Normally
the complete table covers all possible combinations of input values in such a
way that application of the table always selects precisely one action (see also
Decision tables have been used both for program specification and
implementation, the latter being achieved by means of systems that can interpret
(or generate an executable program from) the decision table format.