525 search results - page 3 / 105 » On Query Algebras for Probabilistic Databases |
ICDT
2009
ACM
14 years 7 months ago
2009
ACM
World-set algebra is a variable-free query language for uncertain databases. It constitutes the core of the query language implemented in MayBMS, an uncertain database system. Thi...
SIGMOD
2008
ACM
14 years 6 months ago
2008
ACM
SIGMOD
2005
ACM
14 years 6 months ago
2005
ACM
DBPL
2007
Springer
14 years 13 days ago
2007
Springer
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 ...
ICDE
2004
IEEE
14 years 7 months ago
2004
IEEE
We present algebraic equivalences that allow to unnest nested algebraic expressions for order-preserving algebraic operators. We illustrate how these equivalences can be applied s...