An airline sells airplane tickets online. The airline sells tickets at different prices for travelers in different age groups. The airline defines a business rule that requires the customer database to identify the age group of each traveler. You configure an input that represents the date-of-birth data in a customer data set. You create a series of rule statements that compare the data values in the input data to the current date.

You configure a rule set with the following rule statements:

   IF AGE >= 65 THEN SENIOR

OR IF AGE >= 18 THEN ADULT

OR IF AGE < 18 THEN STUDENT

The rule set returns data from the first rule statement that can generate an action. Therefore, the order of the rule statements is relevant. If the rule set reads the second rule statement first, the rule set cannot identify any traveler in the senior age category. When the rule set reads the second rule statement first, the rule set identifies all traveler who are 18 years or older as adults.