Sciweavers

1286 search results - page 54 / 258
» Scalable Package Queries in Relational Database Systems
Sort
View
SIGMOD
2004
ACM
110views Database» more  SIGMOD 2004»
15 years 4 months ago
Liquid Data for WebLogic: Integrating Enterprise Data and Services
Information in today’s enterprises commonly resides in a variety of heterogeneous data sources, including relational databases, web services, files, packaged applications, and c...
Vinayak R. Borkar
DBPL
1995
Springer
106views Database» more  DBPL 1995»
15 years 2 months ago
On Impossibility of Decremental Recomputation of Recursive Queries in Relational Calculus and SQL
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
Guozhu Dong, Leonid Libkin, Limsoon Wong
ACL
2009
14 years 9 months ago
System for Querying Syntactically Annotated Corpora
This paper presents a system for querying treebanks. The system consists of a powerful query language with natural support for cross-layer queries, a client interface with a graph...
Petr Pajas, Jan Stepánek
SIGMOD
2007
ACM
160views Database» more  SIGMOD 2007»
15 years 11 months ago
Cayuga: a high-performance event processing engine
We propose a demonstration of Cayuga, a complex event monitoring system for high speed data streams. Our demonstration will show Cayuga applied to monitoring Web feeds; the demo w...
Lars Brenna, Alan J. Demers, Johannes Gehrke, Ming...
SIGMOD
2008
ACM
145views Database» more  SIGMOD 2008»
15 years 11 months ago
Optimizing complex queries with multiple relation instances
Today's query processing engines do not take advantage of the multiple occurrences of a relation in a query to improve performance. Instead, each instance is treated as a dis...
Yu Cao, Gopal C. Das, Chee Yong Chan, Kian-Lee Tan