651 search results - page 82 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
VLDB
1998
ACM
14 years 1 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...
ICDE
1997
IEEE
14 years 10 months ago
1997
IEEE
We propose a data model and a few algebraic operations that provide semantic foundation to multidimensional databases. The distinguishing feature of the proposed model is the symm...
SIGMOD
2008
ACM
14 years 9 months ago
2008
ACM
As applications within and outside the enterprise encounter increasing volumes of unstructured data, there has been renewed interest in the area of information extraction (IE) ? t...
VLDB
1997
ACM
14 years 1 months ago
1997
ACM
This paper presents a region splitting strategy for physical database design of multidimensional le organizations. Physical database design is the process of determining the optim...
CORR
2010
Springer
13 years 9 months ago
2010
Springer
Incorporating probabilities into the semantics of incomplete databases has posed many challenges, forcing systems to sacrifice modeling power, scalability, or treatment of relatio...