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Task scheduling using intertask dependencies in Carnot

Authors:

Christine TomlinsonAuthors Info & Claims

ACM SIGMOD Record, Volume 22, Issue 2

Pages 491 - 494

https://doi.org/10.1145/170036.170150

Published: 01 June 1993 Publication History

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Abstract

The Carnot Project at MCC is addressing the problem of logically unifying physically-distributed, enterprise-wide, heterogeneous information. Carnot will provide a user with the means to navigate information efficiently and transparently, to update that information consistently, and to write applications easily for large, heterogeneous, distributed information systems. A prototype has been implemented which provides services for (a) enterprise modeling and model integration to create an enterprise-wide view, (b) semantic expansion of queries on the view to queries on individual resources, and (c) inter-resource consistency management. This paper describes the Carnot approach to transaction processing in environments where heterogeneous, distributed, and autonomous systems are required to coordinate the update of the local information under their control. In this approach, subtransactions are represented as a set of tasks and a set of intertask dependencies that capture the semantics of a particular relaxed transaction model. A scheduler has been implemented which schedules the execution of these tasks in the Carnot environment so that all intertask dependencies are satisfied.

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Cited By

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Huhns MSingh M(1995)A mediated approach to open, large-scale information managementProceedings International Phoenix Conference on Computers and Communications10.1109/PCCC.1995.472502(115-121)Online publication date: 1995
https://doi.org/10.1109/PCCC.1995.472502
Huhns MSingh M(1994)Automating workflows for service provisioning: integrating AI and database technologiesProceedings of the Tenth Conference on Artificial Intelligence for Applications10.1109/CAIA.1994.323647(405-411)Online publication date: 1994
https://doi.org/10.1109/CAIA.1994.323647
Gallina BGuelfi N(2008)SPLACIDProceedings of the 2008 32nd Annual IEEE Software Engineering Workshop10.1109/SEW.2008.15(115-124)Online publication date: 15-Oct-2008
https://dl.acm.org/doi/10.1109/SEW.2008.15
Show More Cited By

Index Terms

Task scheduling using intertask dependencies in Carnot
1. Information systems
  1. Data management systems
    1. Database management system engines
      1. Database transaction processing
      2. Parallel and distributed DBMSs
    2. Query languages
2. Theory of computation
  1. Theory and algorithms for application domains
    1. Database theory
      1. Database query languages (principles)

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Information & Contributors

Information

Published In

ACM SIGMOD Record Volume 22, Issue 2

June 1, 1993

558 pages

ISSN:0163-5808

DOI:10.1145/170036

Editors:
Peter Buneman
Univ. of Pennsylvania
,
Sushil Jajodia,
Won Kim
UniSQL, Inc., Austin, TX

Issue’s Table of Contents

SIGMOD '93: Proceedings of the 1993 ACM SIGMOD international conference on Management of data
June 1993
566 pages
ISBN:0897915925
DOI:10.1145/170035
Editors:
Peter Buneman
Univ. of Pennsylvania
,
Sushil Jajodia

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 June 1993

Published in SIGMOD Volume 22, Issue 2

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Huhns MSingh M(1995)A mediated approach to open, large-scale information managementProceedings International Phoenix Conference on Computers and Communications10.1109/PCCC.1995.472502(115-121)Online publication date: 1995
https://doi.org/10.1109/PCCC.1995.472502
Huhns MSingh M(1994)Automating workflows for service provisioning: integrating AI and database technologiesProceedings of the Tenth Conference on Artificial Intelligence for Applications10.1109/CAIA.1994.323647(405-411)Online publication date: 1994
https://doi.org/10.1109/CAIA.1994.323647
Gallina BGuelfi N(2008)SPLACIDProceedings of the 2008 32nd Annual IEEE Software Engineering Workshop10.1109/SEW.2008.15(115-124)Online publication date: 15-Oct-2008
https://dl.acm.org/doi/10.1109/SEW.2008.15
Hull R(1997)Global Predicate-Based Locks in Long-Running TransactionsProceedings of the 1st International Conference on Enterprise Distributed Object Computing10.5555/645342.650294Online publication date: 24-Oct-1997
https://dl.acm.org/doi/10.5555/645342.650294
Hull RMendelzon AÖzsoyoglu Z(1997)Managing semantic heterogeneity in databasesProceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems10.1145/263661.263668(51-61)Online publication date: 1-May-1997
https://dl.acm.org/doi/10.1145/263661.263668
Hull R(1997)Global predicate-based locks in long-running transactionsProceedings First International Enterprise Distributed Object Computing Workshop10.1109/EDOC.1997.628361(197-206)Online publication date: 1997
https://doi.org/10.1109/EDOC.1997.628361
Singh MCannata PHuhns MJacobs NKsiezyk TOng KSheth ATomlinson CWoelk D(1997)The Carnot Heterogeneous Database ProjectDistributed and Parallel Databases10.1023/A:10086455094745:2(207-225)Online publication date: 1-Apr-1997
https://dl.acm.org/doi/10.1023/A%3A1008645509474

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