Titlebook: Advances in Spatial Databases; Third International David Abel,Beng Chin Ooi Conference proceedings 1993 Springer-Verlag Berlin Heidelberg

諂媚于人

政府

GeO2: Why objects in a geographical DBMS?, entities‘ semantic is expressed through high level concepts in an entity-relationship model extended by both inheritance and propagation mechanisms..The system‘s implementation is described. It takes advantage of the object-oriented aspect of the O. DBMS, and in particular of the inheritance mechan

舊石器

CANDY

Qualitative and topological relationships in spatial databases,The main advantages of such a formalism are its rigorousness, clear semantics and sound inference mechanism. We also show how the formalism can be extended to include orientation and metrical information. Comparisons with other formalisms are discussed.

金哥占卜者

GRIEF

Query- adaptive data space partitioning using variable-size storage clusters,page. Here we present considerations on data space partitions which use large . storage clusters of variable size rather than single pages. Its main motivation is given by real complex geographical objects ranging from 100 Bytes to 10 KBytes in storage size. For such objects it does not make sense t

歌唱隊

騷擾

艱苦地移動

Oversee