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» Hierarchical Indexing Approach to Support XPath Queries
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SIGMOD
2009
ACM
213views Database» more  SIGMOD 2009»
14 years 7 months ago
Dictionary-based order-preserving string compression for main memory column stores
Column-oriented database systems [19, 23] perform better than traditional row-oriented database systems on analytical workloads such as those found in decision support and busines...
Carsten Binnig, Stefan Hildenbrand, Franz Fär...
ADC
2005
Springer
119views Database» more  ADC 2005»
14 years 1 months ago
LSDX: A New Labelling Scheme for Dynamically Updating XML Data
In order to facilitate query processing for XML data, several path indexing, labelling and numbering scheme have been proposed. However, if XML data need to be updated frequently,...
Maggie Duong, Yanchun Zhang
SIGMOD
1999
ACM
110views Database» more  SIGMOD 1999»
13 years 12 months ago
Multi-dimensional Selectivity Estimation Using Compressed Histogram Information
The database query optimizer requires the estimation of the query selectivity to find the most efficient access plan. For queries referencing multiple attributes from the same rel...
Ju-Hong Lee, Deok-Hwan Kim, Chin-Wan Chung
DKE
2008
96views more  DKE 2008»
13 years 7 months ago
Fragment-based approximate retrieval in highly heterogeneous XML collections
Due to the heterogeneous nature of XML data for internet applications exact matching of queries is often inadequate. The need arises to quickly identify subtrees of XML documents ...
Ismael Sanz, Marco Mesiti, Giovanna Guerrini, Rafa...
WWW
2007
ACM
14 years 8 months ago
Extraction and search of chemical formulae in text documents on the web
Often scientists seek to search for articles on the Web related to a particular chemical. When a scientist searches for a chemical formula using a search engine today, she gets ar...
Bingjun Sun, Qingzhao Tan, Prasenjit Mitra, C. Lee...