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1.5. The solutions > 1.5.2. The benefits of a rule repository - Pg. 31

10 CHAPTER 1 The world of rules As we shall see in Section 8.5 in Chapter 8, the organization's rule book must be consistent, in that no two rule statements conflict with or overlap each other (examples of such conflicts and overlaps are also to be found in Section 8.5). If rule statement authors use different synonyms, the process of check- ing for conflict and overlap is that much more difficult. Remember, such verification effort increases as the square of the number of rule statements. 1.5.1.3 The benefits of standardized syntax Even if a standard vocabulary is used, checking rule statements for duplication, conflict, and overlap is made even more difficult if different sentence structures are used for rule statements of the same type. Consider the following: R9. R10. R11. R12. R13. R14. Each account application must specify the date of birth of the customer. { Each account application must specify the customer's date of birth. 16 { The date of birth of the customer must be specified in each account application. { The customer's date of birth must be specified in each account application. { It is obligatory that each account application specifies the date of birth of the customer. { It is obligatory that each account application specifies the customer's date of birth. Each of these rule statements expresses the same rule. If more than one of them is in the organization's rule book, detection of such duplication can only be achieved by either tedious manual inspection or