Automatic Deployment of Application-Specific Metadata and Code in MOCHA

  • Manuel Rodríguez-Martínez
  • Nick Roussopoulos
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1777)

Abstract

Database middleware systems require the deployment of application-specific data types and query operators to the servers and clients in the system. Existing middleware solutions rely on developers and system administrators to port and manually install all this application-specific functionality to all sites in the system. This approach cannot scale to an environment in which there are hundreds of data sources, such as those accessed by the Web and even more custom-tailored applications, since the complexity and the cost involved in maintaining a code base system-wide are enormous. This paper describes a novel metadata-driven framework designed to automate the deployment of all application-specific functionality used by a middleware system. We used Java and XML to implement this framework in MOCHA, a middleware system developed at the University of Maryland. We first present the kind of services, metadata elements and software tools used in MOCHA to automate code deployment. Then, we describe how the features of MOCHA simplify the administration and reduce the management cost of a middleware system in a large scale environment.

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References

  1. 1.
    Sudarshan Chawathe, Hector Garcia-Molina, Joachim Hammer, Kelly Ireland, Yannis Papakonstantinou, Jeffrey Ullman, and Jennifer Widom. The TSIMMIS Project: Integration of Heterogeneous Information Sources. In Proc. of IPSJ Conference, Tokyo, Japan, 1994.Google Scholar
  2. 2.
    World Wide Web Consortium. Extensible Markup Language (XML) 1.0, February 1998. http://www.w3.org/TR/1998/REC-xml-19980210.
  3. 3.
    World Wide Web Consortium. Namespaces in XML, January 1999. http://www.w3.org/TR/1999/REC-xml-names-19990114/.
  4. 4.
    World Wide Web Consortium. Resource Description Framework (RDF) Model and Syntax, February 1999. http://www.w3.org/TR/REC-rdf-syntax/.
  5. 5.
    Informix Corporation. Virtual Table Interface Programmer’s Guide, September 1997.Google Scholar
  6. 6.
    Oracle Corporation. Oracle Transparent Gateways, 1999. http://www.oracle.com/gateways/html/transparent.html.
  7. 7.
    Fernando de Ferreira Rezende and Klaudia Hergula. The Heterogeneity Problem and Middleware Technology: Experiments with and Performance of Database Gateways. In Proc. VLDB Conference, pages 146–157, New York, NY, USA, 1998.Google Scholar
  8. 8.
    Internet Engineering Task Force. Uniform Resource Identifiers (URI): Generic Syntax, August 1998. RFC2396.Google Scholar
  9. 9.
    Manuel Rodríguez-Martínez and Nick Roussopoulos. MOCHA: A Self-Extensible Middleware Substrate For Distributed Data Sources. Technical Report UMIACS-TR 98-67, CS-TR 3955, University of Maryland, October 1998.Google Scholar
  10. 10.
    Manuel Rodríguez-Martínez and Nick Roussopoulos. Automatic Deployment of Application-Specific Metadata and Code in MOCHA. Technical Report UMIACS-TR 99-61, CS-TR 4067, University of Maryland, November 1999.Google Scholar
  11. 11.
    Mary Tork Roth and Peter Schwarz. Don’t Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources. In 23rd VLDB Conference, Athens, Greece, 1997.Google Scholar
  12. 12.
    Michael Stonebraker. The SEQUOIA 2000 Storage Benchmark. In Proc. ACM SIGMOD Conference, Washington, D.C., 1993.Google Scholar
  13. 13.
    Anthony Tomasic, Louiqa Rashid, and Patrick Valduriez. Scaling Heterogeneous Databases and the Design of DISCO. In Proc. 16th ICDCS Conference, Hong Kong, 1996.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Manuel Rodríguez-Martínez
    • 1
  • Nick Roussopoulos
    • 1
  1. 1.Institute for Advanced Computer Studies Department of Computer ScienceUniversity of MarylandCollege Park

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