Data Modeling and Query Processing for an Object-Oriented Spatial Database System
Yang Hee Kim · Journal of Electrical Engineering and Information Science · 1998
In this paper, we present an object-oriented spatial database system called KROSS. It makes the most of the object-oriented concepts of the ObjectStore DBMS such as the inheritance mechanism, object identity, and complex objects. For handling the structure of spatial objects, we present two levels of object-oriented data models: (1) a spatial object model; (2) an internal description model. We then propose SOQL, a spatial object-oriented query language. SOQL provides an integrated mechanism for the graphical display of spatial objects and the retrieval of objects. To support an efficient hybrid query evaluation, we use the top-down spatial query processing method.