© George Koelsch 2016

George Koelsch, Requirements Writing for System Engineering, 10.1007/978-1-4842-2099-3_4

4. Functional Requirements

George Koelsch

(1)Herndon, Virginia, USA

Now that you understand the attributes of a good requirement, you will consider the different types of requirements. Why do you care about the different types of requirements? “Shouldn’t I just start collecting and writing them?” Interesting question. How will you know where to start? More importantly, how will you know when to stop? What are the different types or categories of requirements that will help you know when you have captured all you need?

There are two major types that will be discussed, functional and nonfunctional requirements. In this chapter, we will take ...

Get Requirements Writing for System Engineering now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.