Activity specification using rendezvous

  • Chawki Tawbi
  • Ghaleb Jaber
  • Marc Dalmau
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 985)


The aim of this paper is to present an active relational DBMS which is typed and extensible (its domains are extended to Abstract Data Types). We were inspired by the notion of tasks in the Ada1 programming language to specify the activity in the system. Users dispose of a constructor to create rule behaviour models (called rule type) for describing the behaviour of objects of this type when activated. Users can therefore create object “rules” and define relation attributes as rules.

Like an Ada task, each rule is a program unit that runs in parallel with other rules or programs. Its role is to execute services in response to requests. Synchronisation between the appellant and the rule is achieved using the principle of rendezvous. When an event occurs the system generates a rendezvous request with the concerned rules and services. We use the rendezvous principle to implement composite events.

Key words

Active DBMS's Ada Tasks Composite Events Type 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Department of Defence, Ada Joint Program Office — Reference Manual for the Ada Programming Language, ANSI/MIL-STD-1815A. Washington, D.C.: Government Printing Office, January 1983.Google Scholar
  2. [2]
    AUPNIORTE P. and JABER G.-The Implementation of an Expandable and Typed RDBMS. Indo-French Workshop on Object Oriented System. Goa (India), 1992.Google Scholar
  3. [3]
    CHAKRAVARTHY S. and MISHRA D.-Snoop An Expressive Event Specification Language for Active Databases. Technical Report, University of Florida, UF-CIS-TR-93-007, March 1993.Google Scholar
  4. [4]
    DAYAL U.-Active Database Management System. 3rd International Conference on Data and Knowledge Base. Jerusalem, June 1988.Google Scholar
  5. [5]
    DIAZ O. and JAIME A.-EXACT an Extensible approach to ACTive object-oriented databases. Technical Report, University San Sebastian, May 1992.Google Scholar
  6. [6]
    GATZIU S. and DITTRICH K.R.-Events in an Active Object-Oriented Database System. Proceedings of the 1st International Workshop On Rules in Database Systems, Edinburgh, 1993. Springer-Verlag (1994), pp 23–39.Google Scholar
  7. [7]
    GEHANI N.H., JAGADISH H.V., and SHMUELI O.-COMPOSE A System For Composite Event Specification and Detection. Technical Report, AT&T Bell Laboratories, December 1992.Google Scholar
  8. [8]
    Hanson E.N.-The Design and Implementation of the Ariel Active Database Rule System. Technical Report, University of Florida, UF-CIS-018-92, September 1991.Google Scholar
  9. [9]
    JABER G.-An Extension of a RDBMS towards an Active RDBMS. Proceedings of BIWIT 94 on Information Systems Design and Hypermedia. Biarritz, February 1994, pp 299–309.Google Scholar
  10. [10]
    McCARTHY D.R. and DAYAL U.-The Architecture of an Active Data Base Management System. Proceeding ACM-Sigmod Conference. Portland, May 1989, pp 215–224.Google Scholar
  11. [11]
    MOSS E.-Nested Transactions: An approach to Reliable Distributed Computing. MI Press (1985).Google Scholar
  12. [12]
    SCHREIER U., PIRAHESH H., AGRAWAL R. and MOHAN C.-Alert An Architecture for Transforming a Passive DBMS into an Active DBMS. Proceedings of the 17th International Conference on Very Large Data Bases. Barcelona, September 1991, pp 469–478.Google Scholar
  13. [13]
    STONEBRAKER M., JHINGRAN A., GOH J. and POTAMIANOS S.-On Rules, Procedures, Caching and Views in Data Base Systems. Proceedings of SIGMOD. Atlantic City, June 1990, pp 281–290.Google Scholar
  14. [14]
    WIDOM J., COCHRANE R.J. and LINDSAY B.G.-Implementing Set-Oriented Production Rules as an Extension to Starburst. Proceedings of the 17th International Conference on Very Large Data Bases. Barcelano, September 1991, pp 275–285.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Chawki Tawbi
    • 1
  • Ghaleb Jaber
    • 1
  • Marc Dalmau
    • 1
  1. 1.Centre de RechercheIUT de BayonneBayonne CedexFrance

Personalised recommendations