Which syntax turns an existing constraint on?()
Which syntax turns an existing constraint on? ()
When defining a referential constraint between the parent table T2 and the dependent table T1, which of the following is true?()
Which constraint can be defined only at the column level? ()
禁用约束时出现下列错误:ORA-02297:cannot disable constraint-dependencies exist。这个错误是由于禁止下列哪个约束造成的?()
下列哪项属于约束理论(TOc, Theory of Constraint)的主要关注领域?()
禁用约束时出现下列错误:ORA-02297:cannot disable constraint-dependencies exist。这个错误是由于禁止下列哪个约束造成的?()
限制理论(TOC,Theoryof Constraint)的主要关注领域是().
Which constraint can be defines only at the column level? ()
Which constraint can be defines only at the column level?()