The Use Case Document is a business document which provides a story of how a system, and its actors, will be utilized to achieve a specific goal.
STANDARDS FOR PRESENTING USE CASES:
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2) Actors: Identify who the main individuals and systems involved in the use case are going to be. Any actor that is used in the use case’s flow of events must be named up front.
3) Assumptions/Pre-conditions: Define what the state of the world is prior to the beginning of the flow of events described in the use case.
4) Post-conditions: Explain what the state of the world will be once the flow of events described in the use case occurs.
5) Business rules: These are the operating rules that govern or constrain the environment in which the process flow happens. For example, “placing an order can only happen between 9AM and 5PM” is a business rule. The use case must obey these rules.
6) Normal process flow: Define the “happy path” for the process flow, step by step and sequentially numbered. The “happy path” essentially means what the default flow is, without accounting for exceptions, conditions, or errors. It should lead to the successful conclusion stated in the post-conditions.
7) Alternate process flows: When there are major decision points or exceptions that create a different path to the conclusion of the use case, then each of those alternate process flows must be defined step by step just like you did with the normal process flow. If you numbered the normal process flow sequentially and the alternate flow begins in a certain step, you can just start the description of the alternate flow from there.
Use Case Wiki template:
Copy and paste into new Wiki page then Edit.
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- Obtain the sales tax table for computation of tax on video rentals from user.
- Need to ensure that we have covered all parties under the ‘Stakeholders and Interests’ heading. >
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