IEC [So GUIDE 77-2 Guide for specification of product properties and classes Part 2: Technical principles and guidance First edition 2008 @ISO/IEC 2008 ISO/IEC GUIDE 77-2:2008(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 downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat 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. COPYRIGHTPROTECTED DOCUMENT ISO/IEC2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means IsO's memberbody in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ISO/IEC2008-All rightsreserved ISO/IEC GUIDE 77-2:2008(E) Contents Page Foreword Introductior 1 Scope. 2 Terms and definitions. 3 General principles... 3.1 The common ISO 13584/lEC 61360 dictionary model.. 3.2 Simultaneous description of product characterization classes and product properties. 3.3 Attribute and relationship-based definitions..... 12 3.4 Universal identification of classes and properties 12 3.5 Modularity 14 4 Specifying properties. 4.1 Propertiestobedefined 4.2 Properties and associated attributes ... 4.3 Properties and associated values 19 4.4 Properties and context of evaluation .. 20 4.5 Product assemblies and their properties 21 4.6 Properties and features ........... 5 Designing product characterization class hierarchies. .24 5.1 Product characterization classes to be defined.. 24 5.2 Product characterization classes and associated attributes. 25 5.3 Connecting classes and properties: visibility and applicability of properties .25 5.4 Double inheritance mechanism for properties.... 27 5.5 Classselectors.. 28 5.6 Productcharacterizationversusproductcategorization 28 5.7 Product characterization and engineering models.. 29 6 Exchanging reference dictionaries .30 Bibliography... Dranizaion for standardization All rights reserved ii