The image cncpt051.gif shows tables DEPT and EMP. Table DEPT has three columns:

• DEPTNO

• DNAME

• LOC

Each value in the DNAME column must be unique.

Table EMP has six columns:

• EMPNO

• ENAME

• ... Other Columns ...

• SAL

• COMM

• DEPTNO

Each row must have a value for the ENAME column. Each row must have a value for the EMPNO column, and the value must be unique. Each value in the DEPTNO column must match a value in the DEPTNO column of the DEPT table. Each value in the SAL column must be lower than 10,000.