For table, use the CHECK constraint to ensure integrity.
对于表，可以使用CHECK约束来确保完整性。
The CHECK constraint is perfect for this, as the following table definition shows.
CHECK约束非常适合执行此项操作，如以下所示表定义。
The CHECK constraint is perfect for this, as the following table definition shows.
CHECK约束非常适合执行此项操作，如以下所示表定义。
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