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This problem was offered by Prof. Jan Vanthienen who is one of the best known experts in decision tables and a member of the DMN Task Force. You can see other vendor's solutions to this challenge here: https://dmcommunity.wordpress.com/challenge/challenge-jan-2016/ Next month Prof. Vanthienen will provide his comparative analysis of different submitted representations along with his explanations of what constitutes a good decision table. The Rules All employees get a minimum of 22 days Only employees younger than 18 or at least 60, or with at least 30 years of service receive 5 extra days Employees with at least 30 years of service and also employees of age 60 or more receive 3 extra days on top of other days If an employee has at least 15 but less than 30 years of service 2 extra days are given. These 2 days are also provided for employees age 45 or more. They cannot be combined with the 5 extra days Extra Credit Make these changes to your rules Under 18 base days is 15; 60 and over base days is 25 Employees between 18 and 45 get 4 days if they have less than 30 year’s service Employees over 45 get 1 extra day if they have less than 15 year’s service All days can be combined 1. Under 18 base days is 15; 60 and over base days is 25 2. Employees between 18 and 45 get 4 days if they have less than 30 year’s service 3. Employees over 45 get 1 extra day if they have less than 15 year’s service 4. All days can be combined
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