Documenting Business Rules

What are Buisness Rules

Business Rule Definition: http://www.allaboutrequirements.com/2011/12/business-rule-definition.html 
Limitation Rule: For example: Only two pieces of luggage per passenger is allowed
Validation Rule: For example: Transferring account is not possible if the account is created after 1/1/1980
Permission Rule: For example: Account details must be visible for Gold members only
Evaluation Rule: If the order sum is higher than €4000 the customer is granted a4% discount
Process Rule: For example: If the door lock has been activated the “Occupied” sign must be switched on.


Various ways to document Business Rules
Business Rules: http://www.allaboutrequirements.com/business-rules/