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Admissible Record-Oriented Evaluation Plans for Declarative Updates

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Proceedings of the First East-European Symposium on Advances in Databases and Information Systems (ADBIS)

Advances in Databases and Information Systems

2-5 September 1997

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      Abstract

      Efflcient evaluation strategies for declarative updates have rarely been investigated. Due to possible dependencies between the resulting database state and the order in which records (objects) are processed, usually declarative updates are evaluated in a set-oriented way in order to ensure a deterministic evaluation. In this paper, we show that such dependencies can be detected by exploiting knowledge about conflicts between the operations that are used to access the database during the update evaluation. Thus most declarative updates can also be evaluated deterministically, and in some cases more efflciently, in a record-oriented way. We show that some of the detected conflicts can be relaxed or even be ignored, while a deterministic evaluation can still be guaranteed.

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        Query evaluation techniques for large databases

         Goetz Graefe (1993)
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          Access path selection in a relational database management system

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            Author and article information

            Affiliations
            Dresdner Bank AG, 60301 Frankfurt a.M., Germany
            GMD-IPSI, Dolivostrasse 15, 64293 Darmstadt, Germany
            Contributors
            Conference
            September 1997
            September 1997
            : 1-14
            10.14236/ewic/ADBIS1997.18
            © Gisela Fischer et al. Published by BCS Learning and Development Ltd. Proceedings of the First East-European Symposium on Advances in Databases and Information Systems, (ADBIS'97), St Petersburg

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

            Proceedings of the First East-European Symposium on Advances in Databases and Information Systems
            ADBIS
            1
            St Petersburg
            2-5 September 1997
            Electronic Workshops in Computing (eWiC)
            Advances in Databases and Information Systems
            Product
            Product Information: 1477-9358 BCS Learning & Development
            Self URI (journal page): https://ewic.bcs.org/
            Categories
            Electronic Workshops in Computing

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