2853 search results - page 28 / 571 » On the Efficiency of Provenance Queries |
SSDBM
1999
IEEE
14 years 23 days ago
1999
IEEE
Multidimensional Analysis in On-Line Analytical Processing (OLAP), and Scientific and statistical databases (SSDB) use operations requiring summary information on multi-dimensiona...
VLDB
2002
ACM
13 years 8 months ago
2002
ACM
Our experimental analysis of several popular XPath processors reveals a striking fact: Query evaluation in each of the systems requires time exponential in the size of queries in ...
JAPLL
2010
13 years 7 months ago
2010
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 ...
CIKM
2010
Springer
13 years 6 months ago
2010
Springer
Many existing indexes on text work at the document granularity and are not effective in answering the class of queries where the desired answer is only a term or a phrase. In this...
DASFAA
2009
IEEE
14 years 3 months ago
2009
IEEE
Abstract. With the increased need of data sharing among multiple organizations, such as government organizations, financial corporations, medical hospitals and academic institution...