7/23/2019 Functional Point Testing.pptx

1/30

Functional and test point

analysis techniques

7/23/2019 Functional Point Testing.pptx

2/30

Functional point analysis

Highly popular technique used today

Used to estimate the size

Invented by Allan Albrecht of IBM Alternative to L!"lines of code#

$ize is determined as a function of

input% output% inquiries% internal &lesand e'ternal &les(

7/23/2019 Functional Point Testing.pptx

3/30

Functional pointAnalysis"contd((#

Method for measuring the size of thesoft)are on the customer*s point ofvie)(

+his method brea,s the businessapplication into smaller components(

Ma-or advantage is that it provides aconsistency in the measurement ofe.orts across organisations(

7/23/2019 Functional Point Testing.pptx

4/30

/evelopment functions% testing%maintanance point count

Independent from development toolsand environment

Used to measure productivity acrossvarious tools and environment

+a,es all transactions and data )hichcan be used for the developmentprocess including requirements%builds% installation and production

7/23/2019 Functional Point Testing.pptx

5/30

$teps in fpa

7/23/2019 Functional Point Testing.pptx

6/30

$tep01

2lementary process3

there are t)o sets of elementaryprocesses

1( /ata in Motion"transaction functionpoints#

4( /ata at 5est "data function points#

7/23/2019 Functional Point Testing.pptx

7/30

+ransaction function points

5epresents data moving inside tooutside 2%22

utside to inside 2'ternal Input

5ated based on the data elementtype and &le type referenced(

7/23/2019 Functional Point Testing.pptx

8/30

/ata function points

Information stored for laterprocessing /ata maintained by application

Internal log &les

2'ternal interface &les

7/23/2019 Functional Point Testing.pptx

9/30

$tep40 /2+%F+5%52+

/2+0 gui element

F+50 no of &les referenced inaccepting an e'ternal input orgenerating e'ternal output

52+0 5ecord 2lement +ype

7/23/2019 Functional Point Testing.pptx

10/30

$tep 06 UF7!

$tandard tables are available tocompute unad-usted function pointcounts for data and transaction

based on no of /2+ % 52+ F+5

7/23/2019 Functional Point Testing.pptx

11/30

$tep08 9AF

A value ad-ustment faction based ongeneral characteristics is applied tocompute ad-usted function point

count"F7!#

value ad-ustment factor:"total /I;

7/23/2019 Functional Point Testing.pptx

12/30

$tep0? computing e.ort estimate

from F7 size

A productivity factor is applied toarrive at e.ort estimate fortransaction and data

Historical data can be used todetermine productivity

7/23/2019 Functional Point Testing.pptx

13/30

$tep0> 2stimating e.orts insdlc

$tandard tables are available toestimate the e.orts for variousphases in $/L!

7/23/2019 Functional Point Testing.pptx

14/30

uic, F7A

uic, fpa is a approach to provide asize estimate )ithin =0 1

7/23/2019 Functional Point Testing.pptx

15/30

Function Point Analysis

+hese function0point counts are then)eighed "multiplied# by their degree ofcomple'ity3

$imple Average !omple'Inputs 4 8 >

utputs 6 ? @

Files ? 1< 1?Inquires 4 8 >

Interfaces 8 @ 1 : >

outputs> average E ? : 6