Hit Policy – General Rules

When more than one rule matches the input data, this is known as overlapping rules , “Hit Policy” specifies what the Decision Table should do as a result. The “Hit Policy” is succinctly stated using the first character of the policy name for clarity.

• Hit Policy is selected in this field.

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Hit Policies

• Multiple (conflicting) rules can match different outputs.
• Rules are evaluated from top to bottom.
• Rules can conflict, only the first match matters.

• The first matching value is output.

• Conflict does not create a problem

• All matching rules should result in the same output.

• All result outputs are the same and a single result is returned.

• There is no conflict.

• All rules are discrete.

• Only one rule can match.

• Multiple rules can match, with different output entries.

• Priorities are independent from rule sequence.

• Returns the matching rule with the highest output priority.

• Returns all matches in rule order.

• It results in a list of outputs in order.

• Returns all of the hits in decreasing output priority order.

Collect operators are;

• C+Sum: Sum of all the distinct outputs of all matching rules.
• C<Minimum: The smallest value of the outputs of all matching rules.
• C>Maksimum: The largest value of the outputs of all matching rules.
• C#Count: Returns the number of distinct outputs of all matching rules.