510 search results - page 96 / 102 » Foundations of RDF Databases |
SIGMOD
1999
ACM
13 years 11 months ago
1999
ACM
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
VLDB
1998
ACM
13 years 11 months ago
1998
ACM
The problem of finding an optimal bipartition of a rectangle set has a direct impact on query performance of dynamic R-trees. During update operations, overflowed nodes need to be...
VLDB
1987
ACM
13 years 11 months ago
1987
ACM
is at least ae powerful as SQL. Two well known relational query languages that have a sound theoretical foundation are relational algebra and relational calculus. As SQL is more cl...
CLEANDB
2006
ACM
13 years 9 months ago
2006
ACM
An important reality when integrating scientific data is the fact that data may often be "missing", partially specified, or conflicting. Therefore, in this paper, we pre...
ER
2006
Springer
13 years 9 months ago
2006
Springer
Initial software quality requirements tend to be imprecise, subjective, idealistic, and context-specific. An extended characterization of the common Softgoal concept is proposed fo...