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.)

Database platforms of the subsequent new release usually are inherently very advanced end result of the range of necessities put on them. Incorporating energetic, genuine time, and temporal virtues in a single database procedure is an hard attempt yet can also be a commend capable one. This publication offers the lawsuits of the second one foreign Workshop on energetic, genuine Time, and Temporal Database platforms (ARTDB 97), held in Como, Milan, in September 1997. the purpose of the workshop was once to deliver researchers jointly from the lively and actual time examine groups, and to check the present state-of-the-art in energetic, actual time, and temporal database structures. This ebook bargains a suite of papers offered on the ARTDB ninety seven workshop. The papers, a lot of them representing knowledgeable and tenable effects, light up the feasibility of creating database method helping reactive habit, whereas imposing timeliness and predictability. The booklet comprises 9 papers rigorously reviewed and authorised by means of this system committee, 3 invited papers written by means of famous researchers within the box, and summaries of the panel discussions held on the workshop. this system committee got seventeen submissions, the place every one submission used to be reviewed by means of at the very least 3 software committee contributors. the 2 panel periods interested by predictability concerns and on functional event of energetic, actual time, and temporal database platforms. The ARTDB ninety seven workshop used to be held in cooperation with the IEEE Technical Committees on actual Time structures and Complexity in Computing, and the ACM particular curiosity staff 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

Example text

De nition 1 The similarity requirement of a transaction T is de ned as a predicate P . After T is nished, the answer X is regarded as correct if P X  = 1; the answer is rejected if P X  = 0. Two di erent answers X1 and X2 are considered similar if P X1  = P X2 . A transaction with 1 as P takes any result. It does not need to be scheduled at all. The example would be A's transaction to locate B in above combat system. A transaction with 0 as P can never be ful lled and should be rejected.

IEEE Computer 1991 58 68 Liu, J. W. S. Son, S. , editors: The First International Workshop on Real-Time Databases: Issues and Applications, Newport Beach, California 1996 Locke, C. : Best-E ort Decision Making for Real-Time Scheduling. : Event Monitoring and Detection in Distributed Real-Time Systems: A Survey. : Active Databases as a Paradigm for Enhanced Computing Environments. 1983 O'Neil, P. : Guest Editorials: Real-Time Database Systems. Information Systems 21 1996 1 2 Ozsoyoglu, G.

With current ongoing research, We foresee the design of subdatabases getting more sophisticated and can be re-applied to di erent federated databases. The whole system will reduce cost by making use of such COTS subsystems. Design of a Real-Time SQL Engine in the Distributed Environment 3 The Similarity Predicate 31 In this section we extend the similarity concept to lessen database constraints and try to reduce the network load. The similarity predicate can further unify all real-time constraints so as to facilitate database management.

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