An initial analysis of requirements can be performed by means of analysis class models and CRC cards to get an initial idea about how to go from the requirements to the design of the system. CRC cards can be used as a complement or as substitute of UML analysis at the beginning of the analysis process. Such analysis can allow to understand if some requirements are unclear and all the domain objects.

Lecture

• C(lass) R(esponsability) C(ollaboration) Cards Analysis: how to go from user stories to object oriented representation
• OCL Support for more formal initial analysis
  

Exercise

• OCL Exercise [Solution]
  

Reading Material

• From Use Cases to Class Diagrams with OCL
• Example tool that supports OCL statements: https://github.com/dresden-ocl
  

Following slides are given as support to the elicitation process as discussed in the last lecture, they cover all the ways to collect software requirements (they are an optional read, will *not* be part of the exam).

Additional Material

• Software Requirements Elicitation

Videos