【单选题】Which command is used to create the top file?
A、create source file
B、create constraint file
C、create HDL wrapper
A、create source file
B、create constraint file
C、create HDL wrapper
A、Employeeid和depid设为组合主键
B、Employeeid设为主键,同时在depid列上创建一个外键约束
C、Employeeid设为主键,同时在depid列上创建一个检查约束
D、在Employeeid列上创建一个唯一约束,同时在depid列上创建一个外键约束
A、Drink a lot of water.
B、Do physical exercise.
C、Eat non-processed food.
D、Dine out regularly.
A、Greeting
B、Chitchat
C、purpose
D、pleasantry
A、total+receipts;
B、total 0; sum total;
C、total=total+receipts;
D、total=sum(total,receipts);
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