Read Anywhere and on Any Device!

Subscribe to Read | $0.00

Join today and start reading your favorite books for Free!

Create Free Account

Migrating Legacy Systems: Gateways, interfaces and the incremental approach

Michael Stonebraker

2.8/5 ( ratings)

Many businesses are burdened by legacy ISs--existing systems that contain valuable data but lack the power or the agility to meet current organizational requirements. Since such systems are by nature resistant to modification, the only way an enterprise can gain full use of the data within one is to move to a completely new IS--ideally, one that won't become a legacy itself in a few years. This book discusses the challenges and provides a framework for a workable system migration, based on incremental modifications that allow the manager to control cost and risk. Focusing on data migration, the authors outline key techniques for transforming a legacy IS into a flexible system that meets current needs and is adaptable to unpredictable future changes. Because designing, developing, testing, and deploying a new system all at once would be extremely risky, the authors advocate a step-by-step strategy that migrates the system to a decomposable target environment while the current IS remains completely operational. Their flexible 11-step method allows any IS to be migrated incrementally, using gateways to access data reliably and accurately without any downtime.

Because each company's IS is as unique as its business strategy, the authors focus on the choices and pitfalls that may be encountered in an IS migration. Drawing on over 45 years of collective IS experience, they illustrate their work with two complete case studies of migration projects they worked on themselves. Their versatile solution is effective for any migration, including those to a client/server environment using relational DBMSs and 4GLs.

Features a special survey of migration tools by Jennifer Schmidt.

Contents

Foreword, by Blayne Maring
Preface

1. Problems and possibilities of legacy IS migration
2. Migrating decomposable legacy ISs
3. Case study 1: Migrating Money Central´s Cash Management System
4. Migrating semidecomposable legacy ISs
5. Case study 2: Migrating Global telecom´s Telephone Provisioning System
6. Migrating nondecomposable legacy Iss
7. Migrating legacy ISs: A general case
8. Distributed computing and incremental migration
9. Toll wish list
10. A practical implementation with migration tools

Glossary
References
Index
About the authors

Language: English

Pages: 210

Format: Paperback

Publisher: Morgan Kaufmann Publishers

Release: January 01, 1995

ISBN: 1558603301

ISBN 13: 9781558603301

Migrating Legacy Systems: Gateways, interfaces and the incremental approach

Michael Stonebraker

2.8/5 ( ratings)

Many businesses are burdened by legacy ISs--existing systems that contain valuable data but lack the power or the agility to meet current organizational requirements. Since such systems are by nature resistant to modification, the only way an enterprise can gain full use of the data within one is to move to a completely new IS--ideally, one that won't become a legacy itself in a few years. This book discusses the challenges and provides a framework for a workable system migration, based on incremental modifications that allow the manager to control cost and risk. Focusing on data migration, the authors outline key techniques for transforming a legacy IS into a flexible system that meets current needs and is adaptable to unpredictable future changes. Because designing, developing, testing, and deploying a new system all at once would be extremely risky, the authors advocate a step-by-step strategy that migrates the system to a decomposable target environment while the current IS remains completely operational. Their flexible 11-step method allows any IS to be migrated incrementally, using gateways to access data reliably and accurately without any downtime.

Because each company's IS is as unique as its business strategy, the authors focus on the choices and pitfalls that may be encountered in an IS migration. Drawing on over 45 years of collective IS experience, they illustrate their work with two complete case studies of migration projects they worked on themselves. Their versatile solution is effective for any migration, including those to a client/server environment using relational DBMSs and 4GLs.

Features a special survey of migration tools by Jennifer Schmidt.

Contents

Foreword, by Blayne Maring
Preface

1. Problems and possibilities of legacy IS migration
2. Migrating decomposable legacy ISs
3. Case study 1: Migrating Money Central´s Cash Management System
4. Migrating semidecomposable legacy ISs
5. Case study 2: Migrating Global telecom´s Telephone Provisioning System
6. Migrating nondecomposable legacy Iss
7. Migrating legacy ISs: A general case
8. Distributed computing and incremental migration
9. Toll wish list
10. A practical implementation with migration tools

Glossary
References
Index
About the authors

Language: English

Pages: 210

Format: Paperback

Publisher: Morgan Kaufmann Publishers

Release: January 01, 1995

ISBN: 1558603301

ISBN 13: 9781558603301

More books from Michael Stonebraker

Readings in Database Systems

4.8/5 ( ratings)

Architecture of a Database System

4.5/5 ( ratings)

Getting DataOps Right

4.3/5 ( ratings)

Object-Relational Dbmss

3.5/5 ( ratings)

Object Relational DBMS

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB 2018 Workshops, Poly and DMAH, Rio de Janeiro, Brazil, August 31, 2018, ... (Lecture Notes in Computer Science, 11470)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB Workshops, Poly 2020 and DMAH 2020, Virtual Event, August 31 and ... Papers (Lecture Notes in Computer Science)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB Workshops, Poly 2021 and DMAH 2021, Virtual Event, August 20, 2021, Revised ... Notes in Computer Science Book 12921)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB 2018 Workshops, Poly and DMAH, Rio de Janeiro, Brazil, August 31, 2018, Revised ... incl. Internet/Web, and HCI Book 11470)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB Workshops, Poly 2022 and DMAH 2022, Virtual Event, September 9, 2022, ... (Lecture Notes in Computer Science, 13814)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB Workshops, Poly 2022 and DMAH 2022, Virtual Event, September 9, 2022, Revised ... Notes in Computer Science Book 13814)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB 2019 Workshops, Poly and DMAH, Los Angeles, CA, USA, August 30, 2019, Revised ... Notes in Computer Science Book 11721)

Heterogeneous Data Management, Polystores, and Analytics for Healthcare: VLDB 2019 Workshops, Poly and DMAH, Los Angeles, CA, USA, August 30, 2019, ... (Lecture Notes in Computer Science, 11721)

Rate this book!

Write a review?