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IBM Systems Journal

Issue 2 • Date 1984

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Displaying Results 1 - 10 of 10
  • Preface

    Publication Year: 1984 , Page(s): 98 - 99
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1078 KB)  

    This issue of the IBM Systems Journal is devoted to papers that present the implementation and design considerations for IBM'S most recent data base offering, IBM Database 2. In addition to implementing the relational data model in the MVS and MVS/XA environments, this system provides significantly enhanced query facilities, as well as complete support for access from other subsystems such as IMS/... View full abstract»

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  • An overview of three relational data base products

    Publication Year: 1984 , Page(s): 100 - 111
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1578 KB)  

    This issue of the IBM Systems Journal focuses on aspects of three recently announced IBM relational data base products. They are IBM Database 2, Query Management Facility, and Data Extract. This essay illustrates the requirements that these products were designed to address and gives a brief overview of their content and history. Its objective is to provide an introduction to the more specific and... View full abstract»

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  • IBM Database 2 overview

    Publication Year: 1984 , Page(s): 112 - 125
    Cited by:  Papers (10)  |  Patents (14)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2055 KB)  

    IBM Database 2 (DB2) is a data base management system that supports the relational model of data. This paper presents the major features of DB2 and discusses its architecture and the relationship of DB2 with the host operating system. These principles are illustrated by an example. View full abstract»

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  • The Query Management Facility

    Publication Year: 1984 , Page(s): 126 - 150
    Cited by:  Papers (3)  |  Patents (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2076 KB)  

    Data from a relational data base can be displayed in reports, changed, and otherwise controlled using a program called Query Management Facility (QMF). An overview of this program is presented and is followed by a discussion comparing equivalent forms of various queries expressed in two distinctly different languages. Both languages are designed for use with relational data and are supported by QM... View full abstract»

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  • TSO Attach: A multipurpose communication channel to IBM Database 2

    Publication Year: 1984 , Page(s): 151 - 164
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1855 KB)  

    TSO Attach provides IBM Database 2 capabilities in a productive work environment that appears as a natural extension of the Time Sharing Option (TSO) and the Interactive System Productivity Facility (ISPF). It was designed and built with careful consideration for the varied and complex user group for which it was intended. Ease of use and ease of development and maintenance were among the signific... View full abstract»

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  • IBM Database 2 in an Information Management System environment

    Publication Year: 1984 , Page(s): 165 - 177
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1713 KB)  

    Over the years, the IBM Information Management System (IMS/VS) has been developed to meet expanding user needs. During that time, a parallel development has taken place. The relational data model grew from Codd's original theory to a practical data base prototype. Now a new data base management system, IBM Database 2 (DB2), has been built on the relational model. This paper discusses the implement... View full abstract»

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  • Data recovery in IBM Database 2

    Publication Year: 1984 , Page(s): 178 - 188
    Cited by:  Papers (7)  |  Patents (30)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1807 KB)  

    This paper presents the various forms of data recovery provided by IBM Database 2 (DB2). It describes the DB2 recovery log, introduces the notion of a unit of recovery, and discusses the two-phase commit protocol used by DB2. Furthermore, it describes what type of information is logged, the DB2 checkpoint process, what a compensation log record is, and how DB2 handles undo/redo processing, media r... View full abstract»

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  • IBM Database 2 performance: Design, implementation, and tuning

    Publication Year: 1984 , Page(s): 189 - 210
    Cited by:  Papers (4)  |  Patents (4)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2315 KB)  

    The larger and more complex a relational data base, the more efficient the data base management system must be to maintain an acceptable level of performance. The design and implementation of IBM Database 2 (DB2) have been aimed toward this objective. Techniques for achieving this key objective in DB2 are the subject of this paper. Presented are performance-related strategies in query processing a... View full abstract»

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  • Managing IBM Database 2 buffers to maximize performance

    Publication Year: 1984 , Page(s): 211 - 218
    Cited by:  Papers (24)  |  Patents (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1637 KB)  

    The relational data base system, IBM Database 2 (DB2), has a component that manages data buffering. This paper describes the design considerations of the Buffer Manager and the tradeoffs involved in managing the allocation of DB2 buffers to maximize performance. View full abstract»

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  • Suggested Reading

    Publication Year: 1984 , Page(s): 219
    Save to Project icon | PDF file iconPDF (724 KB)  
    Freely Available from IEEE

Aims & Scope

Throughout its history, the IBM Systems Journal has been devoted to software, software systems, and services, focusing on concepts, architectures, and the uses of software.

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John J. Ritsko
IBM T. J. Watson Research Center5