Get Advances in Databases: 15th British National Conference on PDF

By Larry Kerschberg (auth.), Carol Small, Paul Douglas, Roger Johnson, Peter King, Nigel Martin (eds.)

ISBN-10: 3540632638

ISBN-13: 9783540632634

This booklet contains the refereed complaints of the fifteenth British nationwide convention on Databases, BNCOD 15, held in London, in July 1997.
The 12 revised complete papers offered have been chosen from greater than 30 submissions. additionally incorporated are 10 poster shows and the invited lecture at the position of clever software program brokers in complex details platforms via Larry Kerschberg. The papers are prepared in topical sections on transaction processing, optimization, object-orientation and the web, and database integration.

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Additional info for Advances in Databases: 15th British National Conference on Databases, BNCOD 15 London, United Kingdom, July 7–9, 1997 Proceedings

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This type of operation is needed when restarting a crashed node with a fragment replica having a subfragmented hot standby. The operation may also be done when a new node is included and some subfragmented fragments are to be gathered and merged at this node. The log stream from each subfragment will be kept separate. After a following takeover, all new log records are entered into a separate log and they are given LSNs that are higher than the LSNs in all the subfragment logs. The subfragment logs will be removed as part of the checkpointing policy [8].

As soon as the locks are set, new transactions may be served. Thus, by shipping locks together with log records, the period where the fragment is unavailable during takeover is minimized. New transactions may be served concurrently with the redo and undo resulting from the takeover. Third, for each failed node a redo phase will be started. The task of a redo phase is to redo all pending log records from the failed node and to close the log stream. Fourth, undo recovery of "failed" transactions will be done by an undo thread.

444-454, 1994. 48. A. Motro, "Management of Uncertainty in Database Systems," In Modern Database Systems: The Object Model Interoperability and Beyond, W. : Addison-Wesley Publishing CompanytACM Press, 1994. 49. A. Morro, "Multiplex: A Formal Model for Multidatabases and Its Implementation," ISSE Department, George Mason University, Fairfax, VA, Technical Report ISSE-TR-95-10, 1995. 50. A. Motro, "Responding with Knowledge," In Advances in Databases and Artificial Intelligence, Vol. 1: The Landscape of Intelligence in Database and Information Systems, vol.

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Advances in Databases: 15th British National Conference on Databases, BNCOD 15 London, United Kingdom, July 7–9, 1997 Proceedings by Larry Kerschberg (auth.), Carol Small, Paul Douglas, Roger Johnson, Peter King, Nigel Martin (eds.)


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