Sciweavers

1588 search results - page 184 / 318
» Consistent query answering in databases
Sort
View
DEXAW
2005
IEEE
176views Database» more  DEXAW 2005»
15 years 7 months ago
Indexes and Path Constraints in Semistructured Data
In this paper, we study semistructured data and indexes preserving inclusion constraints. A semistructured datum is modelled by multi-rooted edge-labeled directed graphs. We consi...
Yves Andre, Anne-Cécile Caron, Denis Debarb...
ICDT
2011
ACM
213views Database» more  ICDT 2011»
14 years 8 months ago
On provenance and privacy
Provenance in scientific workflows is a double-edged sword. On the one hand, recording information about the module executions used to produce a data item, as well as the parame...
Susan B. Davidson, Sanjeev Khanna, Sudeepa Roy, Ju...
VLDB
1997
ACM
140views Database» more  VLDB 1997»
15 years 9 months ago
Parallel Query Scheduling and Optimization with Time- and Space-Shared Resources
Scheduling query execution plans is a particularly complex problem in hierarchical parallel systems, where each site consists of a collection of local time-shared (e.g., CPU(s) or...
Minos N. Garofalakis, Yannis E. Ioannidis
CIKM
2009
Springer
15 years 11 months ago
Effective and efficient structured retrieval
Search engines that support structured documents typically support structure created by the author (e.g., title, section), and may also support structure added by an annotation pr...
Le Zhao, Jamie Callan
SIGMOD
2004
ACM
166views Database» more  SIGMOD 2004»
16 years 5 months ago
Fast Computation of Database Operations using Graphics Processors
We present new algorithms on commodity graphics processors to perform fast computation of several common database operations. Specifically, we consider operations such as conjunct...
Naga K. Govindaraju, Brandon Lloyd, Wei Wang 0010,...