Information Systems Transformation - William M. Ulrich

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Auteur(s) : William M. Ulrich - Philip H. Newcomb

Editeur : Elsevier Ltd, Oxford

Langue : Anglais

Parution : 30/04/2010

Format : Moyen, de 350g à 1kg

Nombre de pages : 429

Expédition : 842

Dimensions : 23.4 x 19.2 x 2.9

ISBN : 9780123749130

Résumé :

Every major enterprise has a significant installed base of existing software systems that reflect the tangled IT architectures that result from decades of patches and failed replacements. Most of these systems were designed to support business architectures that have changed dramatically. At best, these systems hinder agility and competitiveness and, at worst, can bring critical business functions to a halt.

Architecture-Driven Modernization (ADM) restores the value of entrenched systems by capturing and retooling various aspects of existing application environments, allowing old infrastructures to deliver renewed value and align effectively with enterprise strategies and business architectures.

Information Systems Transformation provides a practical guide to organizations seeking ways to understand and leverage existing systems as part of their information management strategies. It includes an introduction to ADM disciplines, tools, and standards as well as a series of scenarios outlining how ADM is applied to various initiatives. Drawing upon lessons learned from real modernization projects, it distills the theory and explains principles, processes, and best practices for every industry.

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Sommaire:

Part 1 Architecture-Driven Modernization

CHAPTER 1 Introduction to Architecture-Driven Modernization

CHAPTER 2 Modernization Technologies and Services

CHAPTER 3 Modernization Standards Roadmap

CHAPTER 4 Modernization Scenarios

Part 2 Modernization Case Studies

CHAPTER 5 Modernization of the Eurocat Air Traffic Management System (EATMS)

CHAPTER 6 PowerBuilder/4GL Generator Modernization Pilot

CHAPTER 7 Modernization Case Study: Italian Ministry of Instruction, University, and Research

CHAPTER 8 Modernization of Reliability and Maintainability Information System (REMIS) into the Global Combat Support System-Air Force (GCSS-AF) Framework

CHAPTER 9 Federal Agency Case Study: Role of Modernization in a Greenfield Replacement/ COTS Project

CHAPTER 10 Legacy System Modernization of the Engineering Operational Sequencing System (EOSS)

CHAPTER 11 Model-Driven Reverse Engineering of COBOL-Based Applications

CHAPTER 12 Veterans Health Administration's VistA MUMPS Modernization Pilot

CHAPTER 13 Delta Lloyd Deutschland Data Migration Case Study

CHAPTER 14 MoDisco, a Model-Driven Platform to Support Real Legacy Modernization Use Cases

Part 3 A Guide to Moving Forward with Modernization

CHAPTER 15 Launching and Sustaining Modernization Initiatives

Ulrich and Newcomb's book offers a comprehensive examination of the challenges of growing software-intensive systems. Every system has an architecture, but as the authors explain, it is only by continuous, intentional architectural transformation that one can attend to costs while simultaneously creating a mechanism wherein innovation may flourish. I enjoyed the many case studies. Every circumstance is unique, but the authors have offered up best practices for systems modernization from their experience. Their focus on architecture as an artifact for governance is sound, but they go far beyond the technical issues and address many of the social and economic practices that help one evolve a good technical architecture. From the moment one writes a line of code, it becomes legacy, and that legacy accumulates. Whether it becomes a cause of innovation inertia or a source of future value is a factor of how it is continuously modernized. Grady Booch IBM Fellow & Chief Scientist, Software Engineering in IBM Research Estimates by internationally-known researchers of the worldwide legacy code base is now approaching a half-trillion lines. That only counts so-called legacy languages like COBOL--which drive the world. Add in database schemas, configuration files, and legacy data and the amount of hidden data adds up. This dark information, like the dark matter of the universe, is critical to our understanding of our world, we can't simply ignore it. Our best hope is to update it, bring it into modern systems, and keep it alive and vital. Fortunately, nobody knows the modernization landscape better than Ulrich and Newcomb, and this in-depth, practical guide is indispensable to planners & practitioners faced with the legacy modernization challenge. Architecture-driven modernization is the best hope for bringing back legacy applications & information so it can be successfully applied & reused, and this book explains how to plan, develop & manage modernization from every angle. Richard Mark Soley, Ph.D. Chairman and CEO, OMG