27756 search results - page 139 / 5552 » Process Query Systems |
120
Voted
SIGMOD
2010
ACM
15 years 7 months ago
2010
ACM
Current relational databases require that a database schema exist prior to data entry and require manual optimization for best performance. We describe the query optimization tech...
103
Voted
ICDE
2010
IEEE
15 years 9 months ago
2010
IEEE
— Information extraction systems are traditionally implemented as a pipeline of special-purpose processing modules. A major drawback of such an approach is that whenever a new ex...
128
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WMCSA
2003
IEEE
15 years 7 months ago
2003
IEEE
Applications and services in ubiquitous computing systems often interact in a context-dependent, reactive manner. How information flows, and what services communicate when, is det...
114
Voted
ICDE
2010
IEEE
16 years 2 months ago
2010
IEEE
Personalized database systems give users answers tailored to their personal preferences. While numerous preference evaluation methods for databases have been proposed (e.g., skylin...
187
Voted
SIGMOD
2007
ACM
16 years 2 months ago
2007
ACM
Good cardinality estimates are critical for generating good execution plans during query optimization. Complex predicates, correlations between columns, and user-defined functions...