525 search results - page 53 / 105 » On Query Algebras for Probabilistic Databases |
101
Voted
FUIN
2007
15 years 3 months ago
2007
We give formulations for modal deductive databases and present a modal query language called MDatalog. We define modal relational algebras and give the seminaive evaluation algor...
172
Voted
DOCENG
2004
ACM
15 years 9 months ago
2004
ACM
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...
192
Voted
SIGMOD
2005
ACM
16 years 3 months ago
2005
ACM
One of the most common operations in analytic query processing is the application of an aggregate function to the result of a relational join. We describe an algorithm for computi...
130
Voted
ICDT
1995
ACM
15 years 7 months ago
1995
ACM
We investigate and compare two forms of recursion on sets for querying nested collections. The rst one is called sri and it corresponds to sequential processing of data. The second...
140
Voted
CJ
2010
15 years 1 months ago
2010
an be used to abstract away from the physical reality by describing it as components that exist in discrete states with probabilistically invoked actions that change the state. The...