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» Structural Join Order Selection for XML Query Optimization
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ICDE
2003
IEEE
161views Database» more  ICDE 2003»
14 years 5 months ago
Structural Join Order Selection for XML Query Optimization
Structural join operations are central to evaluating queries against XML data, and are typically responsible for consuming a lion's share of the query processing time. Thus, ...
Yuqing Wu, Jignesh M. Patel, H. V. Jagadish
ICDE
2005
IEEE
122views Database» more  ICDE 2005»
13 years 10 months ago
Signature-based Filtering Techniques for Structural Joins of XML Data
Queries on XML documents typically combine selections on element contents, and, via path expressions, the structural relationships between tagged elements. Efficient support for ...
Huan Huo, Guoren Wang, Chuan Yang, Rui Zhou
ICDE
2006
IEEE
148views Database» more  ICDE 2006»
13 years 10 months ago
Estimating XML Structural Join Size Quickly and Economically
XML structural joins, which evaluate the containment (ancestor-descendant) relationships between XML elements, are important operations of XML query processing. Estimating structu...
Cheng Luo, Zhewei Jiang, Wen-Chi Hou, Feng Yan, Ch...
DATESO
2008
131views Database» more  DATESO 2008»
13 years 6 months ago
Towards Cost-based Optimizations of Twig Content-based Queries
Abstract In recent years, many approaches to indexing XML data have appeared. These approaches attempt to process XML queries efficiently and sufficient query plans are built for t...
Michal Krátký, Radim Baca
ICDE
2004
IEEE
137views Database» more  ICDE 2004»
14 years 5 months ago
Selectivity Estimation for XML Twigs
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
Neoklis Polyzotis, Minos N. Garofalakis, Yannis E....