Teses
Dualgrid: A closed representation space for consistent spatial databases
Autor/a:
Data de Lectura:
3-setembro-2012
Facultade:
Facultade de Informática
Universidade:
Universidade da Coruña
Departamento:
Departamento de Computación
Cualificación:
Sobresaliente Cum Laude
Título acadado:
Doutor en Informática
Director:
Co-director/a:
R. H. Güting
Descrición:
The main goal of this research work is to provide a framework to develop spatial
database extensions capable of fulfilling the key properties of the conceptual spatial
algebra they implement. At the same time, the proposed framework meets the
constraints imposed by nowadays real world GIS applications in terms of performance
and resource requirements, as well as interoperability with existing applications and
standards.
To achieve this goal, we first analyze the current state of the art in spatial
information representation. The main focus is on the way the different approaches deal
with the limitations imposed by computers and the effects that these solutions have in
the properties of the conceptual model they intend to implement. Second, we study
the sources of these problems and propose a well-grounded physical model framework
(called Dualgrid) to guarantee that the implementations of spatial algebras keep their
key properties from the perspective of the user application. We also provide an example
of such an implementation and experimental results on how such a framework solves
the consistency and even the implementation problems of an existing and widely used
spatial database extension. Third, we revisit our framework to extend its properties
(DualgridFF) so that it is able to meet the additional restrictions imposed by current
spatial applications, tools and interoperability standards (OGC).