Publisher Summary This chapter performs an analysis to determine the factors that affect the
performance of predictive queries and shows that several of these factors are not considered …

Space support in databases poses new challenges in every part of a database management
system & the capability of spatial support in the physical layer is considered very important …

In this paper we discuss a new type of query in Spatial Databases, called the Trip Planning
Query (TPQ). Given a set of points of interest P in space, where each point belongs to a …

Publisher Summary A continuous nearest neighbor query retrieves the nearest neighbor
(NN) of every point on a line segment. The result contains a set of tuples, such that point is …

Given two sets of points P and Q, a group nearest neighbor (GNN) query retrieves the point
(s) of P with the smallest sum of distances to all points in Q. Consider, for instance, three …

Many location-based applications require constant monitoring of k-nearest neighbor (k-NN)
queries over moving objects within a geographic area. Existing approaches to this problem …

In the past decade, positioning system-enabled devices such as smartphones have become
most prevalent. This functionality brings the increasing popularity of location-based services …

Existing methods for peediction spatio-temporal databases assume that objects move
according to linear functions. This severely limits their applicability, since in practice …

In this paper we propose an approach that enables mobile clients to determine the validity of
previous queries based on their current locations. In order to make this possible, the server …

Due to the advances in positioning technologies, the real time information of moving objects
becomes increasingly available, which has posed new challenges to the database research …