Download Active and Real-Time Database Systems (ARTDB-95): by Umeshwar Dayal (auth.), Mikael Berndtsson MSc, Jörgen PDF

By Umeshwar Dayal (auth.), Mikael Berndtsson MSc, Jörgen Hansson MSc (eds.)

The components of lively and real-time databases have noticeable a major progress of curiosity long ago few years, quite with reference to their help of time-critical and embedded functions. ARTDB-95 supplied, consequently, a massive discussion board for researchers from either groups to debate study effects, and in addition to chart new instructions for the long run. in addition to the eleven submitted papers provided on the workshop, this quantity additionally includes four invited papers at the following subject matters: the effect of energetic databases on advertisement perform; the optimization of energetic database transactions; the necessity for higher language, compiler and power help for real-time databases; and the foundation of time constraints linked to facts, occasions and activities. jointly the papers provide a finished assessment of present study, and should supply helpful examining for educational and business researchers and scholars at either undergraduate and postgraduate level.

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Read or Download Active and Real-Time Database Systems (ARTDB-95): Proceedings of the First International Workshop on Active and Real-Time Database Systems, Skövde, Sweden, 9–11 June 1995 PDF

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Additional info for Active and Real-Time Database Systems (ARTDB-95): Proceedings of the First International Workshop on Active and Real-Time Database Systems, Skövde, Sweden, 9–11 June 1995

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P. Eswaran. Specifications, Implementations and Interactions of a Trigger Subsystem in an Integrated Database System. mM Research Report, RJ 1820, mM San Jose Research Laboratory, San Jose, California, August 1976. [2] J. Widom, S. Ceri and U. Dayal. Active Database Systems: Triggers and Rules for Advanced Database Processing. Morgan-Kaufmann, San Francisco, California 1995. [3] ISO-ANSI Working Draft: SOU /00, 1994. Database Language SQL3. X3H2/94/080, [4] E. Simon and A. Kotz-Dittrich. Promises and Realities of Active Database Systems.

Many popular challenges of today, such as the Information Superhighway, will depend very significantly on the very availability of suitable real-time database systems. Let us push for this work to become a reality, lest we develop this Superhighway just to discover noone with a vehicle faster than a steam-roller dares to enter it. Acknowledgements The authors are most grateful to Phil Laplante, Mohamed Younis and other colleagues in the Real-Time Computing Lab and elsewhere for their many good suggestions, and to the Office of Naval Research, the Naval Surface Warfare Center and other sponsors for supporting this work.

Also, concurrency control pmtocols implemented by active database systems are identical to the protocols found in passive database systems. A noticeable point is that the two problems of rule and transaction optimization have been studied separately. In this paper, we precisely defend the thesis that in an active database framework, the optimization of user transactions requires that rule and transaction optimization be considered as a global problem. Actually, we shall show that (i) the processing of Event-Condition-Action rules can be made more efficient by taking advantage of the structure of user transactions, and (ii) the concurrency of user transactions can be improved if we know the kinds of triggers executed by the transactions and the points at which they are executed within a transaction.

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