Author Topic: Use Case Scenario Types  (Read 1686 times)

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Use Case Scenario Types
« on: July 08, 2008, 06:57:49 am »
Hey, folks. I don't know if my previous post made it onto the forum.

EA defines 3 scenario types, as shown below [Help > Contents > Modeling with UML > Working with UML Elements > Element Properties > Scenarios].

Simple
                   Standard scenario
                   Used to describe ordinary usage

Basic Path
                   Basic execution path
                   The standard execution path with no exceptions

Alternate
                   Alternate pathway
                   Path of execution that includes excepetional conditions

The Help link provided earlier shows a use case scenario example, and according to the example, it is a "Basic Path" scenario type. If that is true, why does step 5 exist in the scenario?

Here's my take on the "Login" scenario.

Basic Path
=======
Steps 1-4 of the existing scenario

Simple Path
========
Steps 1-4 of the existing scenario
Step 5 showing a user-based fault (eg, incorrect login information)

Alternate Path
==========
Steps 1-4 of the existing scenario
Step 5 showing a system-based fault (eg, web, app and/or database server is down, backend programming logic is faulty)

I'd appreciate clarification on the intent of the 3 scenario types. Thanks.