Download or read book An Introduction to Database Systems written by C. J. Date and published by . This book was released on 1975 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Textbook on data processing methodology for the design and implementation of database information systems - outlines three distinct theoretical approaches to database systems design, namely, the relational, hierarchical, and network analysis approaches, and discusses the problems of computer confidentiality and integrity, etc. Diagrams and references.