A function point is a unit of measurement to express the amount of business functionality an information system provides to a user. The cost (in dollars or hours) of a single unit is calculated from past projects.
As of 2012, there are five recognized ISO standards for functionally sizing software:
- COSMIC-FFP: ISO/IEC 19761:2011 Software engineering. A functional size measurement method.
- FiSMA FSM: ISO/IEC 29881:2008 Information technology - Software and systems engineering - FiSMA 1.1 functional size measurement method.
- IFPUG FSM Method: ISO/IEC 20926:2009 Software and systems engineering - Software measurement - IFPUG functional size measurement method
- Mk II Function Point Analysis: ISO/IEC 20968:2002 Software engineering - Ml II Function Point Analysis - Counting Practices Manual
- NESMA FPA Method: ISO/IEC 24570:2005 Software engineering - NESMA function size measurement method version 2.1 - Definitions and counting guidelines for the application of Function Point Analysis
Read more about Function Point: Introduction, Benefits, Criticism
Famous quotes containing the words function and/or point:
“Think of the tools in a tool-box: there is a hammer, pliers, a saw, a screwdriver, a rule, a glue-pot, nails and screws.—The function of words are as diverse as the functions of these objects.”
—Ludwig Wittgenstein (1889–1951)
“I have touched the highest point of all my greatness,
And from that full meridian of my glory
I haste now to my setting. I shall fall
Like a bright exhalation in the evening,
And no man see me more.”
—William Shakespeare (1564–1616)