Mechanism for improving performance on XML over XML data using path subsetting

Techniques are provided for indexing XML documents using path subsetting. According to one embodiment, a PATH table created for storing one row for each indexed node of the XML documents using user-defined criteria. The user-defined criteria are used to determine which nodes of XML documents to incl...

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Bibliographic Details
Main Authors TARACHANDANI ASHA, CHANDRASEKAR SIVASANKARAN, MURTHY RAVI, SEDLAR ERIC, TRAN ANH-TUAN, AGARWAL NIPUN
Format Patent
LanguageEnglish
Published 08.02.2011
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:Techniques are provided for indexing XML documents using path subsetting. According to one embodiment, a PATH table created for storing one row for each indexed node of the XML documents using user-defined criteria. The user-defined criteria are used to determine which nodes of XML documents to included in The PATH TABLE. The PATH table row for a node includes (1) information for locating the XML document that contains the node, (2) information that identifies the path of the node, and (3) information that identifies the position of the node within the hierarchical structure of the XML document that contains the node. Use of the user defined criteria is transparent to any query improves DML indexes overhead costs.
Bibliography:Application Number: US20060401613