Forums for the Business Analyst

  Modern Analyst Forums  Business and Sy...  Requirements  Relation between requirements and structured analysis
Previous Previous
Next Next
New Post 10/2/2012 2:05 PM
User is offline Radek
1 posts
No Ranking

Relation between requirements and structured analysis 

Dear experts,
I am a bit confused with the terminology regarding system analysis.
Could you please explain me the relation or difference between requirements analysis, traditional approach analysis, structured analysis and object-oriented analysi?
Thank you very much for your help.

New Post 10/3/2012 10:04 AM
User is offline Tony Markos
493 posts
5th Level Poster

Re: Relation between requirements and structured analysis 


Basically, for business systems, there are two main types of requirements that a BA deals with:  Behavioral requirements and data requirements.   (There is also things like performance requirements, but I am putting  those other things to the side here.)

Requirements analysis is determining, as necessary, both behavioral requirements and data requirements.   Structured analysis largely consists of specific techniques to discover system - both manual and automated systems - behavioral and data requirements.  CAUTION:  Do not be lead into confusion by those who think that  sturctured analysis is only for automated systems.  That is a VERY popular notion - even within the BABOK - that is wrong.

Object-Oriented Analysis (OOA) also largely consists of specific techniques to discover system behaviroal and data requirements.   Some say that OOA can be used for manual as well as automated systems.   But most say OOA is only for automated systems because it's techniques  refer to things like "messages", "packages", and "objects" which are largely techo weenie terms.

What is the main dfference between structured analysis and OOA?  Behavorial requirements analysis drives data requirements analysis, and the real task at hand in behavioral requirements analysis is not understanding standalone requirements but the essential  interrelationships between the behavioral requirements.  These essential interrelationships are inputs and outputs - typically data flows.  Only structured analysis techniques, specifically data flow diagrams, address discovery of data flows.  OOA techniques do not.

Soooo, I suggest using structured requirements analysis for higher level business modeling on larger scale efforts, and using OOA for smaller scale efforts where the objective is to jump into implementation as soon as possible.



Answer:  For behavioral requirements discovery (which drives data requirements discovery),


Previous Previous
Next Next
  Modern Analyst Forums  Business and Sy...  Requirements  Relation between requirements and structured analysis

Community Blog - Latest Posts

Is Agile a reason to avoid documentation? I bet this question shows up again and again while working with product requirements. On one side, we have got long specifications, complicated diagrams, mystical technical design, too many prototypes and pretty obvious for engineers user guides (do we really need so much?). On the other side, can we actual...
The cloud-native application development has helped enterprises all around the globe reduce time-to-market, enhance performance, and develop agility and flexibility. Several enterprises are achieving these results by migrating their systems or traditional monolithic applications to the cloud. But to gain from the real benefits of cloud technology, ...
So you’ve found the perfect time and place to study and you’re ready to finally get some work done. You’ve pulled out your laptop, your textbook, and your notes, and four different highlighters. After five minutes of reading your textbook, you start zoning out and thinking about puppies. Then, you go on Tumblr and look at cut...


Upcoming Live Webinars


Copyright 2006-2021 by Modern Analyst Media LLC