a)
Functionality.
What is the software supposed to do?
b)
External interfaces.
How does the software interact with people, the systems hardware, other hardware,
and other software?
c)
Performance.
What is the speed, availability, response time, recovery time of various software functions,
etc.?
d)
Attributes.
What are the portability, correctness, maintainability, security, etc. considerations?
e)
Design constraints imposed on an implementation.
Are there any required standards in effect, implementation
language, policies for database integrity, resource limits, operating environment(s) etc.?
The SRS writer(s) should avoid placing either design or project requirements in the SRS.
For recommended contents of an SRS see Clause 5.