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The Architectural Logic of Database Systems

  • E. J. Yannakoudakis

Table of contents

  1. Front Matter
    Pages i-xiv
  2. E. J. Yannakoudakis
    Pages 1-16
  3. E. J. Yannakoudakis
    Pages 17-30
  4. E. J. Yannakoudakis
    Pages 31-62
  5. E. J. Yannakoudakis
    Pages 63-108
  6. E. J. Yannakoudakis
    Pages 109-134
  7. E. J. Yannakoudakis
    Pages 135-161
  8. E. J. Yannakoudakis
    Pages 162-192
  9. E. J. Yannakoudakis
    Pages 193-213
  10. E. J. Yannakoudakis
    Pages 214-237
  11. E. J. Yannakoudakis
    Pages 238-280
  12. E. J. Yannakoudakis
    Pages 281-309
  13. E. J. Yannakoudakis
    Pages 311-312
  14. Back Matter
    Pages 313-318

About this book

Introduction

If we look back to pre-database systems and the data units which were in use, we will establish a hierarchy starting with the concept of 'field' used to build 'records' which were in turn used to build higher data units such as 'files'. The file was considered to be the ultimate data unit of information processing and data binding 'monolith'. Moreover, pre­ database systems were designed with one or more programming languages in mind and this in effect restricted independent develop­ ment and modelling of the applications and associated storage structures. Database systems came along not to turn the above three units into outmoded concepts, but rather to extend them further by establishing a higher logical unit for data description and thereby offer high level data manipulation functions. It also becomes possible for computer professionals and other users to view all information processing needs of an organisation through an integrated, disciplined and methodical approach. So, database systems employ the concepts field, record and file without necessarily making them transparent to the user who is in effect offered a high level language to define data units and relation­ ships, and another language to manipulate these. A major objective of database systems is to allow logical manipulations to be carried out independent of storage manipulations and vice versa.

Keywords

Logic algorithms computer database database design database system design field form functions information modeling modelling programming programming language

Authors and affiliations

  • E. J. Yannakoudakis
    • 1
  1. 1.Postgraduate School of Computer SciencesUniversity of BradfordBradford, West YorkshireUK

Bibliographic information