52 search results - page 2 / 11 » SQL Nested Queries in SPARQL |
ICDE
2007
IEEE
14 years 6 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
SIGMOD
2005
ACM
14 years 5 months ago
2005
ACM
Nested Intervals generalize Nested Sets. They are immune to hierarchy reorganization problem. They allow answering ancestor path hierarchical queries algorithmically - without acc...
ICDE
1995
IEEE
14 years 6 months ago
1995
IEEE
?In a fuzzy relational database where a relation is a fuzzy set of tuples and ill-known data are represented by possibility distributions, nested fuzzy queries can be expressed in ...
IEEECSA
2009
13 years 2 months ago
2009
- The SQL language allows users to express queries that have nested subqueries in them. Optimization of nested queries has received considerable attention over the last few years. ...
ESWS
2008
Springer
13 years 6 months ago
2008
Springer
We believe that the possibility to use SPARQL as a front end to heterogeneous data without significant cost in performance or expressive power is key to RDF taking its rightful pla...