cross-table造句

例句与造句

1. Because check constraints can reference only the columns on which the column - level or table - level constraint is defined , any cross - table constraints in this case , business rules must be defined as triggers
   由于check约束只能引用定义了列级或表级约束的列，表间的任何约束（在本例中是业务规则）都必须定义为触发器。
2. It's difficult to find cross-table in a sentence. 用cross-table造句挺难的