SIGMOD
1994
ACM
14 years 3 months ago
1994
ACM
SIGMOD
1994
ACM
14 years 3 months ago
1994
ACM
We present a framework which allows the user to access and manipulate data uniformly, regardless of whether it resides in a database or in the file system (or in both). A key issu...
SIGMOD
1994
ACM
14 years 3 months ago
1994
ACM
SIGMOD
1994
ACM
14 years 3 months ago
1994
ACM
In this paper, we propose a novel approach for estimating the record selectivities of database queries. The real attribute value distribution is adaptively approximated by a curve...
SIGMOD
1994
ACM
14 years 3 months ago
1994
ACM
Spatial joins are one of the most important operations for combining spatial objects of several relations. In this paper, spatial join processing is studied in detail for extended...
SIGMOD
1994
ACM
14 years 3 months ago
1994
ACM
In the mobile wireless computing environment of the future, a large number of users, equipped with low-powered palmtop machines, will query databases over wireless communication ch...
SSD
1993
Springer
14 years 3 months ago
1993
Springer
Consider a polyhedron that is triangulated into tetrahedra in two different ways. This paper presents an algorithm, and hints for implementation, for finding the volumes of the i...
SSD
1993
Springer
14 years 3 months ago
1993
Springer
Topological relationships between spatial objects represent important knowledge that users of geographic information systems expect to retrieve from a spatial database. A di cult t...
SSD
1993
Springer
14 years 3 months ago
1993
Springer
: Due to the high complexity of objects and queries and also due to extremely large data volumes, geographic database systems impose stringent requirements on their storage and acc...
SSD
1993
Springer
14 years 3 months ago
1993
Springer
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...