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» Creating Database Queries by Demonstration
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ESWS
2011
Springer
12 years 11 months ago
Optimizing Query Shortcuts in RDF Databases
The emergence of the Semantic Web has led to the creation of large semantic knowledge bases, often in the form of RDF databases. Improving the performance of RDF databases necessit...
Vicky Dritsou, Panos Constantopoulos, Antonios Del...
ICDE
2010
IEEE
262views Database» more  ICDE 2010»
14 years 7 months ago
Approximate String Search in Spatial Databases
Abstract-- This work presents a novel index structure, MHRtree, for efficiently answering approximate string match queries in large spatial databases. The MHR-tree is based on the ...
Bin Yao, Feifei Li, Marios Hadjieleftheriou, Kun H...
DEXA
2003
Springer
115views Database» more  DEXA 2003»
14 years 18 days ago
Storing and Querying XML Data in the Nested Relational Sequence Database System
Abstract. We developed the Nested Relational Sequence Database System (NRSD System), which is built upon the Nested Relational Sequence Model (NRSM). The NRSM eliminates a substant...
Ho Lam Lau, Wilfred Ng
SIGMOD
2011
ACM
230views Database» more  SIGMOD 2011»
12 years 10 months ago
GBLENDER: visual subgraph query formulation meets query processing
Due to the complexity of graph query languages, the need for visual query interfaces that can reduce the burden of query formulation is fundamental to the spreading of graph data ...
Changjiu Jin, Sourav S. Bhowmick, Xiaokui Xiao, By...
VLDB
2004
ACM
129views Database» more  VLDB 2004»
14 years 22 days ago
Probabilistic Ranking of Database Query Results
We investigate the problem of ranking answers to a database query when many tuples are returned. We adapt and apply principles of probabilistic models from Information Retrieval f...
Surajit Chaudhuri, Gautam Das, Vagelis Hristidis, ...