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Welcome to the XMorph Query Language Home Page
Flexible Querying for XML |
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XMorph Overview
By imposing a single hierarchy on data, XML makes queries brittle in the sense that a query might fail to produce the desired result if it is executed on the same data organized in a different hierarchy, or if the hierarchy evolves during the lifetime of an application.XMorph is a new, more flexible XML query language. XMorph is a shape polymorphic query language, that is, a single query can extract relevant data from a variety of differently shaped hierarchies as illustrated in the following figure. The same query is evaluated over different hierarchies to produce the same result.
XMorph performs a shape-to-shape transformation as illustrated in the following diagram of the XMorph architecture.
The XMorph data shredder distills an XML data collection into a graph of closest relationships. These relationships are exploited by the XMorph query evaluation engine to construct a data collection to the shape specified in a query.
XMorph Team
- Assistant Professor Curtis Dyreson, Utah State University
- Associate Professor Sourav Bhowmick, Nanyang Technological University
- Dr. Shuohao Zhang, Washington State University and now in industry
- Master's student Kirankanth Mallampalli, Utah State University
- Master's student Aswani Rao Jannu, Utah State University
Curtis E. Dyreson © 2009. All rights reserved.