本书对当前存在的数据库系统的诸多领域进行了全面的介绍。它为数据库技术的建立提供了坚实的基础,同时还展望了未来该领域的发展前景。此*新版本对原版本进行了扩充和更新,以紧跟数据库系统发展和开发的趋势;不过,全书的**仍然放在使读者掌握和理解相关知识上,而不是让内容流于形式。
**包括:
SQL部分的内容已经更新到当前标准。
广泛覆盖并延伸了对关系模型内容的介绍。
关于类型或域的资料已经归类到其各自的章节。
第9章内容已经完全重写。
充分修订、扩充、改进了第15章和第16章的内容,包括了对事务的ACID特性的仔细分析以及有关于此的一些争议
第20章和第23章的内容已经完全重写,以反映当前的研究进展。
第27章涉及数据库与新兴XML标准之间的关系。
附录的内容也重新编写过,以包括如下内容:
TransRelational TM Model综述。
SQL表达式的BNF语法。
一些重要的缩写词以及文中符号的术语表。

PARTI PRELIMINARIE S
Chapter 1 An Overview of Database Management
1.1 Introduction
1.2 What Is a Database System?
1.3 What Is a Database?
1.4 Why Database?
1.5 Data Independence
1.6 Relational Systems and Others
1.7 Summary
Exercises
References and Bibliography
Chapter 2 Database System Architecture
2.1 Introduction
2.2 The Three Levels of the Architecture
2.3 The External Level
2.4 The Conceptual Level
2.5 The Internal Level
2.6 Mappings
2.7 The Database Administrator
2.8 The Database Management System
2.9 Data Communications
2.1 0 Client/Server Architecture
2.11 Utilities
2.1 2 Distributed Processing
2.13 Summary
Exercises
References and Bibliography
Chapter 3 An Introduction to Relational Databases
3.1 Introduction
3.2 An Informal Look at the Relational Model
3.3 Relations and Relvars
3.4 What Relations Mean
3.5 Optimization
3.6 The Catalog
3.7 Base Relvars and Views
3.8 Transactions
3.9 The Suppliers-and-Parts Database
3.10 Summary
Exercises
References and Bibliography
Chapter 4 An Introduction to SQL
Chapter 5 TYPES
Chapter 6 Relations
Chapter 7 Relational Algebra
Chapter 8 Relational Calculus
Chapter 9 Integrity
Chapter 10 Views
PART III DATABASE DESIGN
PART IV TRANSACTION MANAGEMENT
Chapter 15 Recovery
Chapter 16 Concurrency
PART V FURTHER TOPICS
PART VI OBJECTS,RELATIONS,AND XML
APPENDIXES

C.J. Date is an author,lecturer,researcher,and independent consultant specializing in relational database systems.An active member of the database community for nearly 35 years,C.J.Date devotes the major part of his career to exploring,expanding,and expounding the theory and practice of relational technology.He enjoys a reputation second to none for his ability his ability to explain complex technical material in a clear and understandable fashion.