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Software Requirements, Second Edition by Karl E. Wiegers

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Chapter 20. Links in the Requirements Chain

"We just found out that the new union contract is changing how overtime pay and shift bonuses are calculated," Justin reported at the weekly team meeting. "They’re also changing how the seniority rules affect priority for vacation scheduling, shift preferences, and everything else. We have to update the payroll and staff scheduling systems to handle all these changes right away. How long do you think it will take to get this done, Chris?"

"Man, that’s going to be a lot of work," said Chris. "The logic for the seniority rules is sprinkled all through the scheduling system. I can’t give you a decent estimate. It’s going to take hours just to scan through the code and try to find all the places where those ...

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