We propose a definition of a spatial database system as a database system that offers
spatial data types in its data model and query language, and supports spatial data types in …

A concise text presenting the fundamental concepts in Geographical Information Systems
(GIS), emphasising an understanding of techniques in management, analysis and graphic …

The 4-intersection, a model for the representation of topological relations between two-
dimensional objects with connected boundaries and connected interiors, is extended to …

Growth in the available quantities of digital geographical data has led to major problems in
maintaining and integrating data from multiple sources, required by users at differing levels …

Designing a system that is able to make use of quantitative and qualitative data for real
world applications is a challenging problem. Traditional systems produce representational …

This thesis is inspired by the need to build a reasoning mechanism that deals with
qualitative distances and directions, such as the approximate distances and the cardinal …

This paper presents an approach to the development of a practical deductive objectoriented
database (DOOD) system baaed upon the integration of a logic query language with an …

This book aims to offer research at the cutting edge. The individual chapters are fully revised
and updated versions of contributions to the first focused scientific symposium on research …

This paper describes how a deductive object-oriented database (DOOD) can be used to
support the storage and management of data which is typical of that found in geographic …

Most data sets that describe and evolve from real‐world systems are by nature
semiquantitative or qualitative rather than quantitative. This can mean large variations in the …