| Publisher | Utah State University | ||
|---|---|---|---|
| Format | 113.8KB PDF | Date added | 16 Dec 2008 |
| Topics | Programming Languages, XML | ||
| Downloads | 16 | ||
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. This paper presents a new XML query language, called Morph, which supports more flexible querying. Morph is a shape polymorphic query language, that is, a single query can extract relevant data from a variety of differently hierarchies. The Morph data model distills an XML data collection into a graph of closest relationships. This paper describes the syntax, semantics, and a prototype implementation of Morph.
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