不实施参照完整性的关系在支持该关系的公共字段之间显示为细线。

A relationship that does not enforce referential integrity appears as a thin line between the common fields supporting the relationship.

youdao

不实施参照完整性的关系在支持该关系的公共字段之间显示为细线。

A relationship that does not enforce referential integrity appears as a thin line between the common fields supporting the relationship.

youdao