约束表达式的灵活性给模型带来强大的功能和适应性。
The flexible of expression brings the model capability and adaptability.
还存在一个包含智能能力的SQL编辑器控件，用于编辑检查约束表达式。
There is also a SQL editor control that contains intellisense capabilities to edit the check constraint expression.
约束模式[7]是可以被例化并随后配置的，用于简洁地开发约束的预定义的约束表达式。
Constraint patterns 7 are predefined constraint expressions that can be instantiated and subsequently configured for developing constraints in a concise way.
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