Query translation for distributed heterogeneous structured and semi-structured databases

Al-Wasil, Fahad M., Fiddian, Nicholas John and Gray, William Alexander 2006. Query translation for distributed heterogeneous structured and semi-structured databases. Lecture notes in computer science 4042 , pp. 73-85. 10.1007/11788911_6

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Abstract

The main purpose of building data integration systems is to facilitate access to a multitude of data sources. A data integration system must contain a module that uses source descriptions in order to reformulate user queries which are posed in terms of the composite global schema, into sub-queries that refer directly to the schemas of the component data sources. In this paper we propose a method for this user query translation task to target distributed heterogeneous structured data residing in relational databases and semi-structured data held in well-formed XML documents (XML documents which have no referenced DTD or XML schema) produced by Internet applications or human-coded. These XML documents can be XML files on local hard drives or remote documents on Web servers. Our method is based on mappings between the master (composite) view and the participating data source schema structures that are defined in a generated XML Metadata Knowledge Base (XMKB).

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Computer Science & Informatics
Additional Information:	Flexible and Efficient Information Handling 23rd British National Conference on Databases, BNCOD 23, Belfast, Northern Ireland, UK, July 18-20, 2006. Proceedings
ISSN:	1611-3349
Last Modified:	04 Jun 2017 01:42
URI:	https://orca.cardiff.ac.uk/id/eprint/1822

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