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A prime example of a business rule is a rule that has a boolean as result. Let's say that any applicant can request a certain insurance, and all women receive a discount. In this particular case, a default constant value for Discount is set to False and a business rule can be created that overwrites this attribute to true whenever the applicant is female:

Decision table

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A decision table is used best when the projected outcome of the logic consists of more than one value. Let's say that when applying for a certain loan, a risk category is determined. Based upon applicant characteristics such as recurrenc and a calculated risk score, the risk category is either verylow, low, medium, high or decline.

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Default value expression

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Data rule

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