Coad and Yourdons OOA
Identify objects including entities and their methods.
Identify structures (which is a hierarchical relationships between objects), possible structures are inheritance relationship, part-of relationships.
Identify subject which group objects into higher level abstractions. (One level only)
Define services (methods).
Analysis of Coad and Yourdon
It is essentially simplified Smalltalk programming.
The behavior (or control) model is rather weak, it is rather difficult to know exactly how the functionality is implemented.
It is however simple to use and easy to learn, and has a graphical model.
The specification completion criteria are rather weak.
The Rumbaugh Method
Develop a statement of scope for the problem.
Build an object model
Identify classes that relevant for the problem
Define attributes and associations
Define object links
Organize object classes using inheritance
The Rumbaugh Method (II)
Develop a dynamic model
Define events and develop an event trace for each scenario
Construct an even flow diagram
Develop a state diagram
Review behavior for consistency and completeness
Construct a functional model for the system
Identify inputs and outputs
Use data flow diagrams to represent flow transformation
Develop PSPECS for each function
Specify constraints and optimization criteria