designing data services and data models

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designing data services and data models

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Course Number: 1609A Developed with KiZAN Corporation http://www.kizan.com 1099 Part Number: X04-99423 Activity Manual Designing Data Services and Data Models Information in this document is subject to change without notice. The names of companies, products, people, characters, and/or data mentioned herein are fictitious and are in no way intended to represent any real individual, company, product, or event, unless otherwise noted. Complying with all applicable copyright laws is the responsibility of the user. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Microsoft Corporation. If, however, your only means of access is electronic, permission to print one copy is hereby granted. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property.  1999 Microsoft Corporation. All rights reserved. Microsoft, MS-DOS, MS, Windows, Windows NT, Media, and PowerPoint are either registered trademarks or trademarks of Microsoft Corporation in the U.S.A. and/or other countries. The names of companies, products, people, characters, and/or data mentioned herein are fictitious and are in no way intended to represent any real individual, company, product, or event, unless otherwise noted. Other product and company names mentioned herein may be the trademarks of their respective owners. Project Lead: Janet Robinson, Mark Bader Instructional Designers: Mark Bader, Shawn Lock, Michas Sadzak Program Managers: Mark Bader, Rama Biswas, Teresa Canady Subject Matter Experts: Mark Bader, Whitney Roberts (KiZAN Corporation), Janet Robinson, Scott F. Wilson (KiZAN Corporation) Graphic Artist: Elizabeth Johanson (ArtSource, Inc.) Editors: Joyce Cox (Online Training Solutions, Inc.), Todd Duft (Write Stuff), Elizabeth Hui Reese (Write Stuff) Testers: Chris Baca (Digital Counterbalance), Rick Carr (Digital Counterbalance) Production Support: Linda Lu Cannon (Write Stuff), Marlene Lambert (Online Training Solutions, Inc.), Eric Wagoner (Write Stuff) Manufacturing Support: Julie Challenger, John Williams Product Manager: Ron Wodaski Business Manager: Roger Gerdes Authors: Mark Bader, Whitney Roberts (KiZAN Corporation), Janet Robinson, Scott F. Wilson (KiZAN Corporation) Course Number: 1609A Part Number: X04-99423 October 1999 Contents iii Contents Activity 1.1: Categorizing Existing Information 1 Objectives 1 Before You Begin 1 Scenario 2 Exercise 1: Categorizing Information 3 Activity 2.1: Identifying Services 5 Objectives 5 Before You Begin 5 Scenario 5 Exercise 1: Identifying Service Classes 6 Activity 3.1: Identifying Data-Related Use Cases and Data Requirements . 7 Objectives 7 Before You Begin 7 Exercise 1: Identifying Use Cases that Require Data 8 Exercise 2: Identifying Hidden Data Requirements 9 Exercise 3: Identifying Nonfunctional Requirements 10 Activity 3.2: Relating Data Requirements to Conceptual Design 11 Objectives 11 Before You Begin 11 Exercise 1: Analyzing Your Own Experience of Conceptual Design 12 Activity 4.1: Deriving Entities and Attributes from Data Requirements 13 Objectives 13 Before You Begin 13 Exercise 1: Identifying Data Entities 14 Exercise 2: Identifying Entity Attributes 15 Activity 4.2: Creating a Logical Data Model 17 Objectives 17 Before You Begin 17 Exercise 1: Identifying Relationships Between Entities 18 Exercise 2: Determining Cardinality and Existence 19 Activity 5.1: Identifying Keys in the Logical Model 21 Objectives 21 Before You Begin 21 Exercise 1: Identifying Keys 22 Activity 5.2: Normalizing Data 25 Objectives 25 Before You Begin 25 Exercise 1: Creating a Normalized Data Design 26 Activity 6.1: Translating the Logical Data Design 29 Objectives 29 Before You Begin 29 Exercise 1: Deriving a Physical Data Design from a Logical Data Design 30 Activity 6.2: Optimizing a Physical Data Design 35 Objectives 35 Before You Begin 35 Exercise 1: Determining Areas for Optimization 36 iv Contents Activity 7.1: Identifying Data Integrity Requirements 39 Objectives 39 Before You Begin 39 Exercise 1: Determining Data Validity Requirements 40 Exercise 2: Determining Data Integrity Requirements 42 Activity 7.2: Determining Data Integrity Implementations 43 Objectives 43 Before You Begin 43 Exercise 1: Determining Integrity Implementations 44 Activity 8.1: Selecting Data Access Technologies 47 Objectives 47 Before You Begin 47 Scenario 47 Exercise 1: Identifying Data Access Considerations 48 Exercise 2: Selecting Data Access Technologies 49 Activity 9.1: Data Quiz 51 Objectives 51 Before You Begin 51 Exercise 1: Playing the Data Quiz 52 Appendix A: Ferguson and Bardell, Inc. Case Study 55 The Company 55 Corporate Vision 55 Corporate Profile 55 Current Status 56 Future Business Directions and Plans 56 Corporate Challenge 57 Technology 57 Recent Staffing Changes 57 Current Technologies 58 Future Technology Directions 59 Time and Billing 59 Resource Scheduling 59 Timesheet System 61 Timesheet Data Entry 63 Business Issues Related to Time and Billing 64 Additional Interviews 65 Chief Information Officer 65 Consultant 66 Manager 66 Administrative Assistant 66 Support 67 . Manual Designing Data Services and Data Models Information in this document is subject to change without notice. The names of companies, products, people, characters, and/ or data mentioned. and PowerPoint are either registered trademarks or trademarks of Microsoft Corporation in the U.S.A. and/ or other countries. The names of companies, products, people, characters, and/ or data. Activity 2.1: Identifying Services 5 Objectives 5 Before You Begin 5 Scenario 5 Exercise 1: Identifying Service Classes 6 Activity 3.1: Identifying Data- Related Use Cases and Data Requirements .

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