May 2017
Intermediate to advanced
230 pages
7h 27m
English
Content preview from Mastering Non-Functional Requirements
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NFR - Sizing
Software Non-functional Assessment Process (SNAP), a measurement of non-functional software size. SNAP point sizing is a complement to a function point sizing, which measures functional software size. It is a product of the International Function Point Users Group (IFPUG), and is sized using the SNAP manual.
The overall size of software consists of separate components, functional and non-functional, for example, 400 function points and 200 SNAP points. The two sizes do not sum up to one single size. The IFPUG functional sizing methodology does not change when measuring the non-functional requirements using SNAP. Non-functional sizing requires recognition of similar artifacts of software used to measure functional size, for example, ...
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