Spatial query processing in an object-oriented database system
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
IFO: a formal semantic database model
ACM Transactions on Database Systems (TODS)
Generalization/specialization and role in object oriented conceptual modeling
Data & Knowledge Engineering
Part-whole relations in object-centered systems: an overview
Data & Knowledge Engineering - Special issue on modeling parts and wholes
Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
Modelling a Hierarchy of Space Applied to Large Road Networks
IGIS '94 Proceedings of the International Workshop on Advanced Information Systems: Geographic Information Systems
Strong Integration of Spatial Domains and Operators in a relational Database System
SSD '93 Proceedings of the Third International Symposium on Advances in Spatial Databases
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Spatial data models have been extensively studied during the last decade. However, requirements of a spatial database system regardless of any specific application, have not received much attention. In this paper, a general Object-Oriented spatial data model is introduced. This model considers a spatial database system in general, without focusing on specific features or applications, and presents a new method for classification of spatial objects into maps. The concept of map as defined here, is an appropriate definition for objects with arbitrary set of spatial components. This concept is similar to the one of a map in the real world. Map definition is followed by the definition of map hierarchy and operations on maps which can be used to answer queries that might be too complicated otherwise.