MT - 46 - SRS , FRS and BRS !

SRS: System Requirement Specification:
It depicts entire system flow, how data is going to flow into the system and overall functionality of the system. SRS says brief about each module's functionality and doesn't include in-depth functionality of each page and module.

BRS: Business Requirement Specification:
This document is called as high level document includes all the requirement demanded by the client. Ideally, this document simply includes all the requirements should be part of proposed system.


FRS: Functional Requirement Specification:
FRS includes requirements, converted into functionality and says that how this requirement is going to work as a part of proposed system.

SRS	FRS	BRS
1. It means “Software Requirement Specification” (SRS).	1. It means “Functional Requirement Specification” (FRS).	1. It means “Business Requirement Specification” (BRS).
2. It deals with resources provided by Company.	2. It deals with requirements given by client.	2. It deals with aspects of business requirements.
3. It always includes Use cases to describe the interaction of the system.	3. In this Use cases are not included.	3. In this Use cases are also not included.
4. It is derived from BRS.	4.It is also derived by discussions.	4.It is derived from the client requirement and discussions.
5. It is developed by System Analyst. And it is also known as User Requirement Specifications.	5. It is always developed by developers and engineers.	5. It is always developed by Business Analyst.
6. In SRS, we describe all the business functionalities of the application.	6. In FRS, we describe the particular functionalities of   every single page in detail from start to end.	6.In BRS, we defines what exactly customer wants. This is the document which is followed by team from start to end.
7. SRS tells means explains all the functional and non functional requirements.	7. FRS tells means explains the sequence of operations to be followed on every single process.	7. BRS tells means explains the story of whole requirements.
8. SRS is a complete document which describes the behavior of the system which would be developed.	8. FRS is a document, which describes the Functional requirements i.e. all the functionalities of the system would be easy and efficient for end user.	8. BRS is a simple document, which describes the business requirements on a quite broad level.

NOTE : FRS and BRS is little confusing : BRS includes list of requirements which are demanded by client and should be part of proposed system; whereas, FRS includes requirement converted into the way it is going to work as a part of proposed system.