Download e-book for iPad: Active, Real-Time, and Temporal Database Systems: Second by Joakim Eriksson (auth.), Sten F. Andler, Jörgen Hansson

By Joakim Eriksson (auth.), Sten F. Andler, Jörgen Hansson (eds.)

ISBN-10: 3540491511

ISBN-13: 9783540491514

ISBN-10: 3540656499

ISBN-13: 9783540656494

Database platforms of the subsequent iteration usually are inherently very advanced a result of variety of necessities put on them. Incorporating lively, genuine time, and temporal virtues in a single database process is an exhausting attempt yet is usually a commend capable one. This publication offers the complaints of the second one foreign Workshop on energetic, actual Time, and Temporal Database structures (ARTDB 97), held in Como, Milan, in September 1997. the purpose of the workshop was once to convey researchers jointly from the lively and genuine time learn groups, and to envision the present state-of-the-art in lively, actual time, and temporal database platforms. This e-book deals a suite of papers provided on the ARTDB ninety seven workshop. The papers, a lot of them representing informed and tenable effects, light up the feasibility of establishing database process aiding reactive habit, whereas implementing timeliness and predictability. The booklet comprises 9 papers rigorously reviewed and approved through this system committee, 3 invited papers written through in demand researchers within the box, and summaries of the panel discussions held on the workshop. this system committee obtained seventeen submissions, the place every one submission used to be reviewed by way of no less than 3 application committee individuals. the 2 panel periods excited by predictability matters and on functional event of lively, genuine time, and temporal database structures. The ARTDB ninety seven workshop used to be held in cooperation with the IEEE Technical Committees on genuine Time structures and Complexity in Computing, and the ACM specified curiosity workforce on Manipulation of Data.

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Extra resources for Active, Real-Time, and Temporal Database Systems: Second International Workshop, ARTDB-97 Como, Italy, September 8–9, 1997 Proceedings

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By setting our ag on integrity as a convergence property, we stress the fact that a user at any time sees only part of the database. It means that only his local perspective need to be consistent and not necessarily re ects the ideal global state of a airs. This property may be used in the DBMS realization as well. For example, consider an employee database where new entries are added every day. Then the rule that a salary eld should be lled is only relevant when the pay-checks have to be sent out.

For example, consider a simple bank account balance database. Even for a large bank this database can be kept in a relatively small main-memory database. To secure its content it has been known for years 6 that battery backed up RAM or SRAM ensures stability. Furthermore, the speed obtained in a mainmemory system allows one to serialize processing the requests, while logging could be o oaded to the front-o ce, thereby reducing the points of total system failure. Nevertheless, the OLTP systems are still based on technology designed for databases equipped with a few hundred Kbyte DRAM and slow, small disks.

Research have been done to lessen stringent database requirements 2, 6 . Kuo and Mok 9 proposed the similarity concept where two values of the same data are deemed exchangable if they are within a certain similarity bound which reduces the database constraints for real-time transactions. In this paper we further extend the concept. Similarity is a binary relation on the domain of a data object. Every similarity relation is re exive and symmetric, but not necessarily transitive. In a schedule, we say that two event instances are similar if they are of the same type read write and access similar values of the same data object.

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Active, Real-Time, and Temporal Database Systems: Second International Workshop, ARTDB-97 Como, Italy, September 8–9, 1997 Proceedings by Joakim Eriksson (auth.), Sten F. Andler, Jörgen Hansson (eds.)

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