If an error message appears stating that a primary key is not defined, select empno as the primary key.

如果出现一条出错信息，声称没有定义一个主关键字，那么您可以选择empno作为主关键字。

youdao

Select each of the controls listed in the following table and update the Label and Alert messages as shown in the table: Select input [EMPNO:] and click Delete.

选择下表列出的所有控件，并且更新表中所示的标签和警告消息：选择input [empno：]，然后单击Delete。

youdao

Select each of the controls listed in the following table and update the Label and Alert messages as shown in the table: Select input [EMPNO:] and click Delete.

选择下表列出的所有控件，并且更新表中所示的标签和警告消息：选择input [empno：]，然后单击Delete。

youdao