Lecture 6: Process Constraint Mapping

Question 1

Summary: Generality

Answer 1

Imperative models:

• Fast to outline, show some (few) ofthe possible flows of a process AS IS
• Describing a general solution goesat expenses of readability of the models, and might introduce errors in themodel

Declarative models:

• Show all the possible flows. Relationslimit the possible flows to what is allowed
• Are thought to be general.Imperative flows can be specified (but not advised to do so)

Question 2

Milestone

Answer 2

-Ensure that follow-up actions areperformed

• If an event A is a milestone for an event B, written A => B ,
  then: whenever A is pending and a required response, B is not enabled

Question 3

Nesting

Answer 3

• More like syntactic sugar, itdecreases the number of connections (arrows) without affecting its semantics
• Whatever relation applied to anesting activity, applies to all nested activities
• Basically, allows for easierreadability

Question 4

Subprocesses

Answer 4

• A graph is a process
• A sub-process is a complex activityin the model that has underlying behavior which is instantiated when thesub-process is started and closed when the sub-process ends
• Sub-processes can be:
• Single-instance: only one instance of the sub-processwill be active at any time, or
• Multi-instance:multiple instances of the sub-processes

Question 5

Traces

Answer 5

• A trace denotes a run (sequences ofactivites executed) in a business process
• An accepting trace has achieved abusiness goal, otherwise is non-accepting
• Activities can be executed anynumber of times until disabled
• A trace is accepting, when there areno pending activities to be executed

Question 6

Process Constraint Mapping

Answer 6

A way to map the business process AS IS. Contains a combination of scenario-based testing, and language-based testing