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» An Overview of Query Optimization in Relational Systems
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SIGMOD
2006
ACM
109views Database» more  SIGMOD 2006»
14 years 8 months ago
OMCAT: optimal maintenance of continuous queries' answers for trajectories
We present our prototype system, OMCAT, which optimizes the reevaluation of a set of pending continuous spatio-temporal queries on trajectory data, when some of the trajectories a...
Hui Ding, Goce Trajcevski, Peter Scheuermann
WWW
2003
ACM
14 years 9 months ago
Implementing XML Schema inside a relational database
XML Schema has emerged as a promising data model that unites structured and unstructured content. The Oracle database has led the commercial database community in integrating supp...
Sandeepan Banerjee
VLDB
1994
ACM
128views Database» more  VLDB 1994»
14 years 21 days ago
From Nested-Loop to Join Queries in OODB
Most declarative SQL-like query languagesfor object-oriented database systems (OOSQL) are orthogonal languages allowing for arbitrary nesting of expressions in the select-, from-,...
Hennie J. Steenhagen, Peter M. G. Apers, Henk M. B...
DMSN
2007
ACM
14 years 16 days ago
Declarative temporal data models for sensor-driven query processing
Many sensor network applications monitor continuous phenomena by sampling, and fit time-varying models that capture the phenomena's behaviors. We introduce Pulse, a framework...
Yanif Ahmad, Ugur Çetintemel
ICDE
2011
IEEE
273views Database» more  ICDE 2011»
13 years 10 days ago
Shortcut selection in RDF databases
—An increasing amount of data produced nowadays is in RDF format. While significant work has been performed on view selection and query optimization algorithms in relational dat...
Vicky Dritsou, Panos Constantopoulos, Antonios Del...