A Tree-Structured Query Interface for Querying Semi-Structured Data

Authors:
Scott Newman;Z. Meral Ozsoyoglu
Affiliations:
Case Western Reserve University;Case Western Reserve University
Venue:
SSDBM '04 Proceedings of the 16th International Conference on Scientific and Statistical Database Management
Year:
2004

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Abstract

XML is a semi-structured data format that is quicklybecoming the standard means of communicationacross the Internet. We introduce a simple, powerful,unambiguous tree-structured user-interface for queryingsemi-structured data. It emphasizes ease-of-useand provides generic access to XML repositories. Animplementation of this interface called the PathwaysExplorer has been built in the context of biologicalpathways. The implementation illustrates some basiccapabilities, such as selection, projection, equijoins,and self-joins. It builds efficient queries using SQL,and it has been shown that XQuery's performancewould be comparable. Future implementations mightallow semantic client-side caching, aggregation andgrouping, recursion, and set operations.