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» On Querying Ontologies and Databases
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PODS
1999
ACM
79views Database» more  PODS 1999»
15 years 10 months ago
Hypertree Decompositions and Tractable Queries
Georg Gottlob, Nicola Leone, Francesco Scarcello
DBPL
1999
Springer
131views Database» more  DBPL 1999»
15 years 10 months ago
Optimization of Nested SQL Queries by Tableau Equivalence
Vasilis Aggelis, Stavros S. Cosmadakis
DEXA
1999
Springer
89views Database» more  DEXA 1999»
15 years 10 months ago
Answering Queries by Semantic Caches
Parke Godfrey, Jarek Gryz
VLDB
1999
ACM
105views Database» more  VLDB 1999»
15 years 10 months ago
Histogram-Based Approximation of Set-Valued Query-Answers
Yannis E. Ioannidis, Viswanath Poosala
WEBDB
1999
Springer
95views Database» more  WEBDB 1999»
15 years 10 months ago
From Semistructured Data to XML: Migrating the Lore Data Model and Query Language
Roy Goldman, Jason McHugh, Jennifer Widom