分区是由磁盘上相邻扇区组成的容器,分区是由简单数据结构定义的。
Partitions are containers that consist of contiguous sectors on the disk; partitions are defined by simple data structures.
在该部分,以ORACLE SPATIAL为例,讨论了矢量数据模型的简单数据结构;
The simple data structure of vector model is introduced using the ORACLE SPATIAL as an example.
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