ISO/IEC INTERNATIONAL STANDARD 20968 First edition 2002-12-01 Software engineering Mk Il Function Point Analysis Counting Practices Manual Génielogiciel-Analyse des points fonctionnelsMk ll-Manuel des pratiques de comptage Reference number ISO/IEC 20968:2002(E) TSO TEC @ISO/IEC2002 THS under Not for Resale ISO/IEC 20968:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ?ISO/IEC2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland yationagazaiSandardizatio @ ISO/IEC 2002-Allrights reserved itted without license from IHS Not for Resale ISO/IEC 20968:2002(E) Table of Contents TABLE OF CONTENTS II FOREWORD v 1 1 INTRODUCTION 1 1.1 Definition and Purpose of MkII Function Point Analysis 1 1.2 Purpose of the Counting Practices Manual (°CPM’) 2 1.3 Who should read this document ? 2 1.4 Albrecht/IFPUG Function Point Analysis 2 1.5 Applicability of Mk II FPA 3 1.6 Manual Structure 4 1.7 Metrics Practices Committee 5 1.8 Procedure for raising a Query or Issue with the MPC 5 2 7 THEMKIIFUNCTION POINTANALYSIS RULES 7 Rule 1 Boundary 7 Rule 2 Functional Size and Logical Transactions 7 Rule 3 Processing Component of Logical Transactions 8 Rule 4 Input and Output Components of Logical Trans actions 8 Rule 5 Logical Transaction Size 8 Rule 6 Reporting a Mkll Function Point Count 9 3 11 MEASUREMENTSTEPS 11 Step 1 Determine the Viewpoint, Purpose and Type of the Count 12 Step 2 Define the Boundary of the Count 12 Step 3 Identify the Logical Transactions 13 Step 4 Identify and Categorise the Data Entity Types 13 Step 5 Count the Input Data Element Types, the Data Entity Types Referenced, and the Output Data Element Types. 13 Step 6 Calculate the Functional Size 13 Step 7 Determine Project Effort 13 Step 8 Calculate Productivity and other Performance Parameters 13 Step 9 Score the Degrees of Influence 13 Step 10 CalculatetheTechnical ComplexityAdjustment 13 Step 11 Calculate Adjusted Size and Performance Parameters 14 4 15 GENERAL GUIDELINESFOR MKII FUNCTION POINT COUNTING 15 4.1 Determining the Viewpoint, Purpose and Type of the Count 15 4.2 Drawing the Boundary for a Count 16 4.3 Interfaces 18 4.4 Identifying Logical Transactions 21 4.5 Identifying Entity Types 39 4.6 Identifying Input and Output Data Element Types 43 alainAll rights reeed ii nse from IHS Not for Resale ISO/IEC 20968:2002(E) 5 49 MEASUREMENTGUIDELINESFORSPECIFICSITUATIONS 49 5.1 Counting Graphical User Interfaces (GUIs) 49 5.2 Approximate Sizing of Application Portfolios 54 5.3 Sizing Changes 55 5.4 Changes to make software Year 2000 compliant 58 5.5 Counting Application Packages 58 6 61 CALCULATING THEADJUSTEDSIZE (OPTIONAL) 61 7 63 MEASURING EFFORT 63 7.1 Project Start 64 7.2 Project End 64 7.3 Whose time included? 64 7.4 What time is included? 64 7.5 Project duration 64 8 65 MEASURING PRODUCTIVITY AND OTHER ASPECTS OF PERFORMANCE 65 8.1 Dev