Ashwin,
when we talk of object orientation for analysis, we will be going to explore every nuts and bolts of requirements by following classes and objects principles (OOAD methodology). In general OO analysis starts with mapping of problem domain with a high level Class and Object diagram where all business entity with attributes and there responsibilities are properly mapped to the problem domain (refer to UML class diagrams for more details).
Then all relationships b/w these entities are highlighted along with associated business rules.
Before completing the final domain model several walkthrough and reviews are made to fine tune the model according to the requirements. After freezing this model will act as a central concept for developing a business engine. Also several other modeling techniques will be also deployed for analyzing classes behavior and states when some event goes on.
That will demonstrated by dynamic modeling like extensive flow charts/Activity diagram and state chart diagrams. Then more detailed version like UML sequence diagram comes.
why we need OO analysis is a matter of approach and methodology, as structured techniques are now outdated due its complexity and non-flexibility today the most complex problem domain can be solved by this tecniques and is very well known for reducing complexity. But actually there is nothing like that, which
can gaurantee successfull projects.
Cheers,
Kumar Rohit
Hi:
Are structured systems analysis techniques too complex? Several people with advanced degrees in IT have told me that they don't understand SSA and therefore they can not see how someone like an end user can possibly understand the techniques.
However, I was on a consulting job at a manufacturing company. I was data flow diagramming material control operations, including recieving. I was trying to walk through a data flow diagram with a worker on the recieving dock. This guy was in his early 20's. He wore old blue jeans and a T shirt with holes and transmission fuild stains. He problably made about $10 per hour. When I showed him my data flow diagram, he told me "Thats not how things work here". He then took my data flow diagram and, with a red pen, preceding to make major revisions to it. His corrections were accurate enough that, when I subsequently redrew the diagram and then did a verification walkthrough of it with him, there were only minor additional corrections.
My thought: So much for advanced IT degrees.
Tony
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