Resources - Glossary
business rules
Business rules are rules relating to how computer systems relate to each other or interact with a user, based on the business requirements for a company. These are normally an extension to the standard legal and data integrity rules that systems will need to operate under. For example on a registration form:
Legal rule: Reject the registration if an invalid credit card number is supplied.
Data integrity rule: Reject the registration if the date of birth is not recognisable.
Logical rule: Reject the registration if an existing username is selected.
Business rule: Reject the registration if a country outside of the UK is selected, as the business has made a decision not to sell overseas at this time.
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