Are business rules part of requirements
I was speaking to Barbara von Halle after she returned from an address to requirements people in Connecticut recently, and she told me how surprised she was that the folks at her talk did not see business rules as part of their activities. I wonder whether participants in RQNG believe that business rules are an integral part of requirements gathering...
Rule vs Requirement
Over-simplifying...
A requirement is something that must be done (by a person, within a process, by a system).
A rule states, from a business perspective, HOW the requirement must be met. I.e.: it's a condition that determines which path you take through a business process.
Think of the process of obtaining a passport. If the applicant is under 16 use the green form. If the applicant is 16 or over use the blue form. Same process, different rules (conditions).