Microsoft PowerPoint seg3101-ch2-3 ElicitationTechniques ppt

Use Case-Driven Software Lifecycle Activities (1)
Application
Domain 
Objects
Subsystems
class...
class...
class...
Solution 
Domain 
Objects
Source
Code
Test 
Cases
? 
Expressed in 
Terms Of
Structured By
Implemented
By
Realized By
Verified 
By
System
Design
Object
Design
Implemen-
tation
Testing
class....
? 
Requirements
Elicitation
Use Case
Model
Requirements
Analysis
Elicitation Techniques Existing Systems Interviews
Brainstorming Joint Application Design Prototyping
Use Cases

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78
SEG3101 (Fall 2010). Requirements Elicitation Techniques
Use Case-Driven Software Lifecycle Activities (2)
•
Scenarios guide elicitation, analysis, design, and testing
• There are many scenario-based approaches
• E.g., XP employs user stories (scenarios) to directly generate tests 
that will guide software design and verification
•
Developers are often unable to speak directly to users
•
Scenarios provide a good enough approximation of the “voice 
of the user”
Elicitation Techniques Existing Systems Interviews
Brainstorming Joint Application Design Prototyping
Use Cases

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79
SEG3101 (Fall 2010). Requirements Elicitation Techniques
Reserve Facility
Customer
Member
Hotel Counter Staff
Earn and Redeem Credits
Check In Customer
Check Out Customer
Handle Waiting List
Register Member
Reserve Room
Check Room
Details
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