A New Perspective on Rule Support for Object-Oriented Databases.

@inproceedings{DBLP:conf/sigmod/AnwarMC93,
  author    = {Eman Anwar and
               L. Maugis and
               Sharma Chakravarthy},
  editor    = {Peter Buneman and
               Sushil Jajodia},
  title     = {A New Perspective on Rule Support for Object-Oriented Databases},
  booktitle = {Proceedings of the 1993 ACM SIGMOD International Conference on
               Management of Data, Washington, D.C., May 26-28, 1993},
  publisher = {ACM Press},
  year      = {1993},
  pages     = {99-108},
  ee        = {http://doi.acm.org/10.1145/170035.170059, db/conf/sigmod/AnwarMC93.html},
  crossref  = {DBLP:conf/sigmod/93},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

This paper proposes a new approach for supporting reactive capability in an object-oriented database. We introduce an event interface, which extends the conventional object semantics to include the role of an event generator. This interface provides a basis for the specification of events spanning sets of objects, possibly from different classes, and detection of primitive and complex events. This approach clearly separates event detection from rules. New rules can be added and use existing objects, enabling objects to react to their own changes as well as to the changes of other objects.

We use a runtime subscription mechanism, between rules and objects to selectively monitor particular objects dynamically. This elegantly supports class level as well as instance level rules. Both events and rules are treated as first class objects.

Copyright © 1993 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.

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Referenced by

1. Qing Li, Frederick H. Lochovsky: ADOME: An Advanced Object Modeling Environment. IEEE Trans. Knowl. Data Eng. 10(2): 255-276(1998)
2. Sharma Chakravarthy, Roger Le: ECA Rule Support for Distributed Heterogeneous Environments. ICDE 1998: 601
3. Sharma Chakravarthy: SENTINEL: An Object-Oriented DBMS With Event-Based Rules. SIGMOD Conference 1997: 572-575
4. Jennifer Widom: The Starburst Active Database Rule System. IEEE Trans. Knowl. Data Eng. 8(4): 583-595(1996)
5. Ian S. Thomas, Andrew C. Jones: Extending the Gemstone Smalltalk Interface Debugger to cope with Active Database Components. ADBIS 1996: 183-191
6. Jennifer Widom, Stefano Ceri (Eds.): Active Database Systems: Triggers and Rules For Advanced Database Processing. Morgan Kaufmann 1996, ISBN 1-55860-304-2
   Contents
7. Piero Fraternali, Letizia Tanca: A Structured Approach for the Definition of the Semantics of Active Databases. ACM Trans. Database Syst. 20(4): 414-471(1995)
8. Alexander Aiken, Joseph M. Hellerstein, Jennifer Widom: Static Analysis Techniques for Predicting the Behavior of Active Database Rules. ACM Trans. Database Syst. 20(1): 3-41(1995)
9. Sharma Chakravarthy, V. Krishnaprasad, Z. Tamizuddin, R. H. Badani: ECA Rule Integration into an OODBMS: Architecture and Implementation. ICDE 1995: 341-348
10. Christine Collet, Thierry Coupaye, T. Svensen: NAOS - Efficient and Modular Reactive Capabilities in an Object-Oriented Database System. VLDB 1994: 132-143
11. Sharma Chakravarthy, V. Krishnaprasad, Eman Anwar, S.-K. Kim: Composite Events for Active Databases: Semantics, Contexts and Detection. VLDB 1994: 606-617
12. Amy J. Lee, Elke A. Rundensteiner, Spencer Thomas: Physical Map Assembler: An Active Object-Oriented Database for Human Genome Applications. SSDBM 1994: 128-137