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Unifying Heterogeneous Data Sources with Grid Data Mediation Service

The Grid Data Mediation Service (GDMS) by Alexander Wöhrer provides a powerful middleware solution for presenting heterogeneous data sources as a single virtual data source. It supports operations similar to OGSA-DAI R3 and offers functionalities for handling external dependencies. With features like support for JDBC sources, Xindice, and CSV files, GDMS utilizes SQL for querying. The service includes a mapping schema to resolve data heterogeneities and is available via email support. More information and code availability can be found at www.gridminer.org.

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Unifying Heterogeneous Data Sources with Grid Data Mediation Service

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  1. GDMS Service Proforma Middleware Workshop Alexander Wöhrer

  2. Service: GridDataMediationService • Presenting heterogeneous data sources as one virtual data source to the user • Availability of code • www.gridminer.org • License: not determined yet • Support: email • <SOA Model:WS/WS-GAF/WS-RF/Jini> • Currently OGSI

  3. Service Operations • Same Interface as OGSA-DAI R3 • Perform

  4. Service Dependencies • What else does your service depend on (i.e. external dependencies)? • Same as OGSA-DAI R3 • What does your implementation depend on? • OGSA-DAI R3 • SAXON XQuery Engine

  5. GDMS Features • Mapping Schema • How to combine sources – resolve heterogeneities • Mediated Schema (User View) • Same as conventional GDS • Query Language: SQL • Select …. From …. Where …. Order by ….. • Supported Data Sources • JDBC Sources, Xindice, CSV files

  6. GDMS Architecture I

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