This category of overhead includes CHECK constraint verification and foreign key constraint (referential integrity (ri)) verification.

这一类的开销包括检查约束验证和外键约束(参照完整性(RI))验证。

youdao

Ensure dependent tables in a referential integrity (ri) relationship have indexes that exactly match the foreign key.

确保参照完整性(referential integrity, ri)关系中的依赖表拥有与外键匹配的索引。

youdao