Temporal Data and the Relational Model
Chris J. Date, Hugh Darwen, Nikos A. Lorentzos
Résumé
Temporal database systems are systems that provide special support for storing, querying, and updating historical and/or future data. Current DBMSs provide essentially no temporal features at all, but this situation is likely to change soon for a variety of reasons; in fact, temporal databases are virtually certain to become important sooner rather than later, in the commercial world as well as in academia. This book provides an in-depth description of the foundations and principles on which those temporal DBMSs will be built. These foundations and principles are firmly rooted in the relational model of data; thus, they represent an evolutionary step, not a revolutionary one, and they will stand the test of time.
This book is arranged in three parts and a set of
appendixes:
Preliminaries: Provides a detailed review of the relational
model, and an overview of the Tutorial D language.
Laying the Foundations: Explains basic temporal data
problems and introduces fundamental constructs and
operators for addressing those problems.
Building on the Foundations: Applies the material of the
previous part to issues of temporal database design,
temporal constraints, temporal query and update, and much
more.
Appendixes: Include annotated references and bibliography,
implementation considerations, and other topics.
Key features:
Describes a truly relational approach to the temporal data
problem. Addresses implementation as well as model
issues.
Covers recent research on new database design techniques,
a new normal form, new relational operators, new update
operators, a new approach to the problem of "granularity,"
support for "cyclic point types," and other matters.
Includes review questions and exercises in every
chapter.
Suitable for both reference and tutorial purposes.
- Preface
Part I Preliminaries: A Review of Relational Concepts
- An Overview of Tutorial D
Part II Laying the Foundation: Time and the Database
- What Is the Problem? Intervals
- Opeartors on Intervals
- The EXPAND and COLLAPSE Operators
- The PACK and UNPACK Operators
- Generalizing the Relational Operators
Part III Building on the Foundations: Database Design
- Integrity Constraints I: Candidate Keys and Related Constraints
- Integrity Constraints II: General Constraints
- Database Queries
- Database Updates
- Stated Times and Logged Times
- Point and Interval Types Revisited
Appendixes:
- Implementation Considerations
- Generalizing the EXPAND and COLLAPSE Operators
- References and Bibliography
- Index
L'auteur - Chris J. Date
Chris J. Date est auteur, conférencier, chercheur et consultant indépendant spécialisé dans les bases de données relationnelles. Membre actif de la communauté des bases de données depuis trente ans, il a consacré la majeure partie de sa carrière à explorer, développer et expliquer la théorie et la mise en pratique de la technologie relationnelle. Son point fort : sa facilité à expliquer les sujets techniques les plus complexes d'une manière claire et compréhensible.
Caractéristiques techniques
| PAPIER | |
| Éditeur(s) | Morgan Kaufmann |
| Auteur(s) | Chris J. Date, Hugh Darwen, Nikos A. Lorentzos |
| Parution | 12/03/2003 |
| Nb. de pages | 422 |
| Format | 18,5 x 23 |
| Couverture | Broché |
| Poids | 745g |
| Intérieur | Noir et Blanc |
| EAN13 | 9781558608559 |
| ISBN13 | 978-1-55860-855-9 |
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