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Databaseresearchisa?eldofcomputersciencewheretheorymeetsapplications. Many concepts and methods, that were regarded as issues of theoretical interest when initially proposed, are now included in implemented database systems and related products. Examples abound in the ?elds of database design, query languages, query optimization, concurrency control, statistical databases, and many others. The papers contained in this volume were presented at ICDT'99, the 7th - ternationalConferenceonDatabaseTheory, inJerusalem, Israel, January10-12, 1999. ICDT is an international forum for research on the...

Based on the proceedings of a workshop held at the Appin in August 1985, this book discusses the issues of data abstraction. It introduces the concept of inheritance as a method of polymorphic modelling. It also discusses the issues of controlled access to large scale data in a concurrent and distributed persistent environment.

There is a growing interest in integrating databases and programming languages. In recent years the programming language community has developed new models of computation such as logic programming, object-oriented programming and functional programming, to add to the well established von Neumann model. The data base community has almost independently developed more and more sophisticated data models to solve the problems of large scale data organisation. To make use of these new models in programming languages there must be an awareness of the problems of large scale data. The data base...