995 search results - page 3 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
IDEAS
2003
IEEE
13 years 10 months ago
2003
IEEE
In this concise paper, we present the Nested Relational Sequence Model (NRSM), which is an extension of the Nested Relational Data Model in order to handle XML data. We also intro...
DEXAW
2007
IEEE
13 years 11 months ago
2007
IEEE
The semantic web represents meta-data as a relation of triples using the RDF data model. We have developed a virtual repository system that enables to process queries to RDF views...
IS
2008
13 years 4 months ago
2008
In this paper we propose DFL -- a formal, graphical workflow language for dataflows, i.e., workflows where large amounts of complex data are manipulated, and the structure of the ...
VLDB
1989
ACM
13 years 8 months ago
1989
ACM
SIGMOD
2008
ACM
14 years 4 months ago
2008
ACM
The emergence of database languages with side effects, notably for XML, raises significant challenges for database compilers and optimizers. In this paper, we extend an algebra fo...