谄媚于人
发表于 2025-3-28 16:27:44
http://reply.papertrans.cn/15/1499/149835/149835_41.png
政府
发表于 2025-3-28 20:51:20
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
旧石器
发表于 2025-3-28 23:06:19
http://reply.papertrans.cn/15/1499/149835/149835_43.png
CANDY
发表于 2025-3-29 06:10:22
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
发表于 2025-3-29 10:06:11
http://reply.papertrans.cn/15/1499/149835/149835_45.png
GRIEF
发表于 2025-3-29 14:42:56
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
歌唱队
发表于 2025-3-29 18:20:36
http://reply.papertrans.cn/15/1499/149835/149835_47.png
骚扰
发表于 2025-3-29 22:47:07
http://reply.papertrans.cn/15/1499/149835/149835_48.png
艰苦地移动
发表于 2025-3-30 01:25:26
http://reply.papertrans.cn/15/1499/149835/149835_49.png
Oversee
发表于 2025-3-30 07:47:46
http://reply.papertrans.cn/15/1499/149835/149835_50.png