XML-Based Information Mediation with MIX

Chaitan Baru, Amarnath Gupta, Bertram Ludäscher, Richard Marciano, Yannis Papakonstantinou, Pavel Velikhov, Vincent Chu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The MIX mediator system, MIXm, is developed as part of the MIX Project at the San Diego Supercomputer Center, and the University of California, San Diego.1 MIXm uses XML as the common model for data exchange. Mediator views are expressed in XMAS (XML Matching And Structuring Language), a declarative XML query language. To facilitate user-friendly query formulation and for optimization purposes, MIXm employs XML DTDs as a structural description (in effect, a "schema") of the exchanged data. The novel features of the system include:Data exchange and integration solely relies on XML, i.e., instance and schema information is represented by XML documents and XML DTDs, respectively. XML queries are denoted in XMAS, which builds upon ideas of languages like XML-QL, MSL, Yat, and UnQL. Additionally, XMAS features powerful grouping and order constructs for generating new integrated XML "objects"from existing ones.The graphical user interface BBQ (Blended Browsing and Querying) is driven by the mediator view DTD and integrates browsing and querying of XML data. Complex queries can be constructed in an intuitive way, resembling QBE. Due to the nested nature of XML data and DTDs, BBQ provides graphical means to specify the nesting and grouping of query results.Query evaluation can be demand-driven, i.e., by the user's navigation into the mediated view.

Original languageEnglish (US)
Title of host publicationSIGMOD/PODS 1999 - Proceedings of the 1999 ACM SIGMOD International Conference on Management of Data and Symposium on Principles of Database Systems
PublisherAssociation for Computing Machinery
Pages597-599
Number of pages3
ISBN (Electronic)9781581130843
DOIs
StatePublished - Jun 1 1999
Event1999 ACM SIGMOD International Conference on Management of Data and Symposium on Principles of Database Systems, SIGMOD/PODS 1999 - Philadelphia, United States
Duration: May 31 1999Jun 3 1999

Publication series

NameProceedings of the ACM SIGMOD International Conference on Management of Data
ISSN (Print)0730-8078

Conference

Conference1999 ACM SIGMOD International Conference on Management of Data and Symposium on Principles of Database Systems, SIGMOD/PODS 1999
Country/TerritoryUnited States
CityPhiladelphia
Period5/31/996/3/99

ASJC Scopus subject areas

  • Software
  • Information Systems

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