Here, we construct an OODB schema that recognizes subset relationships between a query and a view, through which we can gain the object of query optimization.

本文构造了一种OODB模式，并建立相应的视图及查询模型，确定它们之间的子包含关系，以达到查询优化的目的。

youdao

Here, we construct an OODB schema that recognizes subset relationships between a query and a view, through which we can gain the object of query optimization.

本文构造了一种OODB模式，并建立相应的视图及查询模型，确定它们之间的子包含关系，以达到查询优化的目的。

youdao