AFM341 Lecture Notes - Lecture 11: Business Rule, American Express, Business Process
28 Jun 2018
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Business rules standardize and constrain process action•
A business rule is a succinct statement of a constraint on a business process•
It's the logic that guides the behaviour of the business in specific situations•
They influence the structure and flow of models, establish multiplicities in class models, and set
criteria for branching in activity models
•
Obligatory. This rule states what should occur: pay in USD â—‹
Prohibited. No payments by check
â—‹
Allowed. States what is allowed under what conditions. Credit card allowed if its American
Express
â—‹
Consider customer payments at a restaurant. The place accepts cash or credit card payments as
long as its American Express. Only accept payments in USD, and no checks. See the following rule
forms
•
Aside from the three operating rule forms just listed, similar structure rules that describe
fundamental characteristics such as "it's necessary that each sale be made to a customer" exist,
rather than making it an operating policy rules that are stated in terms of preferred outcomes.
•
If rules are strictly enforced, violations are not authorizedâ—‹
If rules are subject to pre-override, violations are allowed if authorized in advance.â—‹
If a rule is subject to post-override, violations are allowed if authorized after the violation. â—‹
If rule is subject to override, there should be statement of who can authorize a violation.â—‹
Certain rules can be guidelines which is generally followed but not enforced.
â—‹
There must be enforcement level information that deals with potential violations of rules. •
Rules limit the number of options to those allowed by business policy•
Rules can also inhibit process improvements because they can be tied to outdated technology•
Some business rules are not stated formally; they are implicit. The process analysis should,
therefore, elicit important business rules
•
Include a name, sets of inputs and outputs, and a set of rulesâ—‹
â—‹
See the name is discounts. Customer type/size of order are inputs, discount to offer is the
output. The numbers in this case simply numbers the three rule options.
â—‹
Decision tables combine multiple business rules to support likely circumstances requiring a
decision
•
Business rules and decision tables
Summary
AFM 341 Page 7
Document Summary
A business rule is a succinct statement of a constraint on a business process. It"s the logic that guides the behaviour of the business in specific situations. They influence the structure and flow of models, establish multiplicities in class models, and set criteria for branching in activity models. The place accepts cash or credit card payments as long as its american express. Only accept payments in usd, and no checks. This rule states what should occur: pay in usd. There must be enforcement level information that deals with potential violations of rules. If rules are strictly enforced, violations are not authorized. If rules are subject to pre-override, violations are allowed if authorized in advance. If a rule is subject to post-override, violations are allowed if authorized after the violation. If rule is subject to override, there should be statement of who can authorize a violation. Certain rules can be guidelines which is generally followed but not enforced.
