Using XQuery to describe mappings from global schemas to local data sources

Using XQuery to describe mappings from global schemas to local data sources

This paper describes a database mediation system based on XML related technologies. Descriptions of its architecture, its key metadata and the processes that are used to answer user queries are included. The system uses XQuery to represent the mappings between the global schema and local schemas. XQ...

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Bibliographische Detailangaben
Hauptverfasser: Peng, X., Brazile, R., Swigger, K.M.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Computer architecture
Computer languages
Computer science
Data engineering
Data warehouses
Explosions
Logic programming
Mediation
Relational databases
Standardization
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Beschreibung
Zusammenfassung:This paper describes a database mediation system based on XML related technologies. Descriptions of its architecture, its key metadata and the processes that are used to answer user queries are included. The system uses XQuery to represent the mappings between the global schema and local schemas. XQuery is used to translate user queries on the global virtual database to queries on local data sources. The advantage of using XQuery over specialized logic or programming languages is improved standardization and a powerful descriptive capability for the data.
DOI:10.1109/IRI.2004.1431443