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ICDE
2012
IEEE
228views Database» more  ICDE 2012»
11 years 11 months ago
A General Method for Estimating Correlated Aggregates over a Data Stream
—On a stream of two dimensional data items (x, y) where x is an item identifier, and y is a numerical attribute, a correlated aggregate query requires us to first apply a selec...
Srikanta Tirthapura, David P. Woodruff
IDEAS
2002
IEEE
151views Database» more  IDEAS 2002»
14 years 1 months ago
Completing CAD Data Queries for Visualization
A system has been developed permitting database queries over data extracted from a CAD system where the query result is returned back to the CAD for visualization and analysis. Th...
Milena Gateva Koparanova, Tore Risch
DBPL
2007
Springer
91views Database» more  DBPL 2007»
14 years 2 months ago
Relational Completeness of Query Languages for Annotated Databases
Annotated relational databases can be queried either by simply making the annotations explicitly available along the ordinary data, or by adapting the standard query operators so ...
Floris Geerts, Jan Van den Bussche
VLDB
2007
ACM
104views Database» more  VLDB 2007»
14 years 9 months ago
Extending XQuery with Window Functions
This paper presents two extensions for XQuery. The first extension allows the definition and processing of different kinds of windows over an input sequence; i.e., tumbling, slidi...
Irina Botan, Peter M. Fischer, Daniela Florescu, D...
JAPLL
2010
98views more  JAPLL 2010»
13 years 7 months ago
On database query languages for K-relations
The relational model has recently been extended to so-called K-relations in which tuples are assigned a unique value in a semiring K. A query language, denoted by RAC K , similar ...
Floris Geerts, Antonella Poggi