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Time and Relational Theory
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Learn how to store and retrieve historical information in a relational database.

Table of Contents

PART I A REVIEW OF RELATIONAL CONCEPTS 1: Types and Relations 2: Relational Algebra 3: Relation Variables PART II LAYING THE FOUNDATIONS 4: Time and the Database 5: What's the Problem? 6: Intervals 7: Interval Operators 8: The EXPAND and COLLAPSE Operators 9: The PACK and UNPACK Operators I: The Single-Attribute Case 10: The PACK and UNPACK Operators II: The Multiattribute Case 11: Generalizing the Algebraic Operators PART III BUILDING ON THE FOUNDATIONS 12: Database Design I: Structure 13: Database Design II: Keys and Related Constraints 14: Database Design III: General Constraints 15: Queries 16: Updates 17: Stated Time and Logged Time 18: Point and Interval Types Revisited PART IV SQL SUPPORT 19: The SQL Standard

About the Author

C. J. Date has a unique stature in the database industry. Author or coauthor of well over 30 books on database management (including the bestselling An Introduction to Database Systems, currently in its 8th edition), he enjoys a reputation that's second to none for his ability to explain complex technical issues in a clear and understandable fashion. He was inducted into the Computing Industry Hall of Fame in 2004. Hugh Darwen was employed in IBM's software development divisions from 1967 to 2004. In the early part of his career, he was involved in DBMS development; from 1978 to 1982, he was one of the chief architects of an IBM product called Business System 12, a product that faithfully embraced the principles of the relational model. He was an active participant in the development of the international standard for SQL (and related standards) from 1988 to 2004. Based in the UK, he currently teaches relational database theory at Warwick University and is a tutor and course development consultant for the Open University. He has written two books on database management as well as coauthoring several with C.J. Date. He has received honorary degrees from the University of Wolverhampton and the Open University. Nikos A. Lorentzos is a Professor at the Agricultural University of Athens. He is mainly known for his research in temporal (and also in spatio-temporal) databases. He has participated in relevant European Union funded projects (prime researcher for the development of a Temporal DBMS). The temporal model he has proposed has been extensively evaluated by independent researchers with positive comments, it is decribed in books addressed to university students, it has been the basis of PhDs undertaken in Europe and it has attracted the interest of DBMS developers. He is co-editor of the book Spatiotemporal Databases: The Chorochronos Approach (spatio-temporal databases). He is active in Temporal, Spatial and Spatio-temporal Databases as well as in the development of DSSs and Expert Systems in the forestry and the agricultural domain.

Reviews

"... if you are looking for a good introduction to temporal relational database functionality, or an adjunct to the explanation of temporal capabilities in your DBMS manuals, look no further..." --Data and Technology Today, Nov 2014

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