SRS is:
* Sender Rewriting Scheme, an email mechanism
* Sequence Retrieval System, bioinformatic software by LION Bioscience AG
* Software Requirements Specification, a document of a software system to be developed
* Street Racing Syndicate, a video game
This
(
http://en.wikipedia.org/wiki/SRS[
^].)
I can guess what do you mean, but why asking such questions?
If you need Software Requirements Specification for the system, you should start with the study of this application field. This could help you to understand what's involved:
http://en.wikipedia.org/wiki/Library_information_science[
^].
—SA