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» Querying Complex Structured Databases
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PODS
1991
ACM
93views Database» more  PODS 1991»
13 years 11 months ago
The Expressiveness of a Family of Finite Set Languages
In this paper we characterise exactly the complexity of a set based database language called SRL, which presents a unified framework for queries and updates. By imposing simple s...
Neil Immerman, Sushant Patnaik, David W. Stemple
BMCBI
2006
137views more  BMCBI 2006»
13 years 8 months ago
Improving the accuracy of protein secondary structure prediction using structural alignment
Background: The accuracy of protein secondary structure prediction has steadily improved over the past 30 years. Now many secondary structure prediction methods routinely achieve ...
Scott Montgomerie, Shan Sundararaj, Warren J. Gall...
SIGMOD
2009
ACM
220views Database» more  SIGMOD 2009»
14 years 8 months ago
Keyword search in databases: the power of RDBMS
Keyword search in relational databases (RDBs) has been extensively studied recently. A keyword search (or a keyword query) in RDBs is specified by a set of keywords to explore the...
Lu Qin, Jeffrey Xu Yu, Lijun Chang
NAR
2010
106views more  NAR 2010»
13 years 3 months ago
Protein Geometry Database: a flexible engine to explore backbone conformations and their relationships to covalent geometry
The backbone bond lengths, bond angles, and planarity of a protein are influenced by the backbone conformation (u,w), but no tool exists to explore these relationships, leaving th...
Donald S. Berkholz, Peter B. Krenesky, John R. Dav...
VLDB
1994
ACM
120views Database» more  VLDB 1994»
14 years 9 days ago
Indexing Multiple Sets
Index structures for multiple sets can be classified into those that group entries according to their key values and those that group entries according to their set membership. Th...
Christoph Kilger, Guido Moerkotte