Objects focus on problem domain, then Object Oriented Analysis - Objects Design

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• Nirja Shah   -Posted on 15 Oct 15
  - In the system analysis or object-oriented analysis phase of software development, the system requirements are determined, the classes are identified and the relationships among classes are identified.
  
  - The three analysis techniques that are used in conjunction with each other for object-oriented analysis are as follows:
  Object Modelling
  
  - This modelling develops the static structure of the software system in terms of objects.
  
  - It identifies the objects, the classes into which the objects can be grouped into and the relationships between the objects.
  
  - It also identifies the main attributes and operations that characterize each class.
  
  Dynamic Modelling
  
  - The purpose of this modelling is that after the static behaviour of the system is analyzed, its behaviour with respect to time and external changes needs to be examined.
  
  - It is defined as “a way of describing how an individual object responds to events, either internal events triggered by other objects, or external events triggered by the outside world”.
  
  Functional Modelling
  
  - This is the final component of object-oriented analysis.
  
  - This model shows the processes that are performed within an object and how the data changes as it moves between methods.
  
  - It specifies the meaning of the operations of object modelling and the actions of dynamic modelling.
  
  - It corresponds to the data flow diagram of traditional structured analysis.

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