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JIIS
2006
76views more  JIIS 2006»
13 years 11 months ago
Holes in joins
A join of two relations in real databases is usually much smaller than their cartesian product. This means that most of the combinations of tuples in the crossproduct of the respe...
Jarek Gryz, Dongming Liang
PVLDB
2008
71views more  PVLDB 2008»
13 years 10 months ago
Read-optimized databases, in depth
Recently, a number of papers have been published showing the benefits of column stores over row stores. However, the research comparing the two in an "apples-to-apples" ...
Allison L. Holloway, David J. DeWitt
ICDE
2011
IEEE
273views Database» more  ICDE 2011»
13 years 2 months 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...
CIDR
2011
266views Algorithms» more  CIDR 2011»
13 years 2 months ago
Consistency in a Stream Warehouse
A stream warehouse is a Data Stream Management System (DSMS) that stores a very long history, e.g. years or decades; or equivalently a data warehouse that is continuously loaded. ...
Lukasz Golab, Theodore Johnson
JOLLI
2011
84views more  JOLLI 2011»
13 years 2 months ago
Semantically Restricted Argument Dependencies
This paper presents a new take on how argument dependencies in natural language are established and constrained. The paper starts with a rather standard view that (quantificationa...
Alastair Butler