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When modeling a decision that is limited to two values (for instance Boolean), there are multiple several ways to achieve this:

1. Using a constant value and a business rule
2. Using two business rules
3. Using a decision table

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1. Whenever the result depends on multiple input values, it is best to use a decision table.
2. Whenever the result is a calculation, it is best to use a form with a business rule.
3. It is recommended to formally decide which method to use and capture that in an architecture document. A consistent use of a style throughout a project will help the maintainability of a project. There are many roads that lead to Rome, but within one project it is best if all business engineers follow the same road.

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