2674 search results - page 66 / 535 » Data Models and Query Languages for Spatial Databases |
GIS
2006
ACM
14 years 10 months ago
2006
ACM
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...
SEBD
2003
13 years 11 months ago
2003
The Ambient Logic is a modal logic proposed to describe the structural and computational properties of distributed and mobile computations. The static part of the Ambient Logic is,...
ADC
2007
Springer
14 years 3 months ago
2007
Springer
XQuery is a powerful and convenient language that is designed for querying the data in XML documents. In this paper, we address how to optimally query encrypted XML documents usin...
TIME
2003
IEEE
14 years 2 months ago
2003
IEEE
In bitemporal databases, current facts and transaction states are modelled using a special value to represent the current time (such as a minimum or maximum timestamp or NULL). Pr...
ICOODB
2009
13 years 7 months ago
2009
The integration of database and programming languages is made difficult by the different data models and type systems prevalent in each field. Functional-object query languages con...