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BMCBI
2002
13 years 8 months ago
2002
Background: SeqHound has been developed as an integrated biological sequence, taxonomy, annotation and 3-D structure database system. It provides a high-performance server platfor...
PODS
2009
ACM
14 years 8 months ago
2009
ACM
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
ICDT
2010
ACM
13 years 10 months ago
2010
ACM
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
DEXA
2005
Springer
14 years 1 months ago
2005
Springer
XML query processing is one of the most active areas of database research. Although the main focus of past research has been the processing of structural XML queries, there are gro...
ICDE
1998
IEEE
14 years 9 months ago
1998
IEEE
Algebraic transformation and optimization techniques have been the method of choice in relational query execution, but applying them in OODBMS is difficult due to the complexity o...