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New Post 2/27/2020 12:48 PM
User is offline Gautam
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Functional requirements vs System requirements 


I am finding it hard to determine the difference between these two kinds as they both talk about what the system shall do with a very small line between them. I wonder if anyone can describe the difference between.

New Post 3/31/2020 2:20 AM
User is offline Stewart F
96 posts
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Re: Functional requirements vs System requirements 

Hi Gautam, 

The following is a slightly 'dumbed down' approach, but is easier to understand to the 'proper' response.

Functional Requirements

These are requirements for things that do something. For example, "I want a button that if I click it prints out the Users' details". These are the most common requirement, but it does rather depend on what you are 'building' or what the project you are working on is.

Typically, each Functional requirement should have an end result due to that process.

System Requirements

System requirements are also sometimes called Non-functional requirements. However, they don't have to be. A system requirement may be that you wish to carry out an upgrade to a platform as a part of your project, It still has an end result, so it could fall under the functional requirement, but as it is purely system driven, you could place it under the System requirements. 

A non-functional requirement is something that doesn't, on its own, have a direct end result. So for example, a non-functional requirement might be "I want to improve the performance of the platform, so that I can process a work item quicker".

If you aren't sure, then feel free to post those that you would like clarification on. Also, there are quite a few good documents on this site that might help with such a question. Having said that, always happy to help.


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