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New Post 3/8/2012 10:45 AM
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User is offline DBR
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High Level Requirement - Testability ? 

So, the basic requriement writing recommendation states that high level requirement shall be design independent. I have this requirement

"The system shall have the capability to compute XYZ ". Let's say XYZ = Speed.

The lower level decomposition states the necessary inputs, outputs, equations, etc. needed for the computation. Which can be easily verified.

However, I get into the issue of verifiying this High level requriement. How can we verify this requirement ?....Or is this is a bad requirement that needs modification, if yes, then how....but remember at a high level, the requriements needs to be design independent and only answer the "What?" the system does...not "How?" the system does it...

any help would be appreciated. 

 
New Post 3/8/2012 6:28 PM
User is offline David Wright
141 posts
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Re: High Level Requirement - Testability ? 

 Where did you get that " basic requriement writing recommendation states that high level requirement shall be design independent"? Because, all requirements are design independent.

Defining the computation is also design-independent. We could say these days that the computation is a business rule, not a requirement, because it exists irrespective of your writing of requirements or eventual inclusion in a system.

But I digress, your question is about verification of a high-level requirement. If your SME or sponsor reads it and says "that is my requirement", then it has been verified. If you are asking about how to validate a requirement, that is different.

David Wright

http://about.me/dwwright99


David Wright
 
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