Since the data is spatial, you need to specify the R-Tree access method for this index.

由于涉及到空间数据，您需要为这个索引指定r - Tree访问方法。

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Querying spatial dada is usually concerned with space position. Spatial dada need special multi-dimensional access method.

空间数据的查询通常与空间位置有关，需要特殊的多维存取方法。

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This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.

论文在自主开发的空间数据库VISTA的基础上针对特定的对象-关系型数据结构，提出了相应的访问控制方法。

youdao

This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.

论文在自主开发的空间数据库VISTA的基础上针对特定的对象-关系型数据结构，提出了相应的访问控制方法。

youdao