In the engine department, the () is looked upon to provide the leadership that is needed.
A、captain
B、chief engineer
C、chief officer
D、chief motorman
A、captain
B、chief engineer
C、chief officer
D、chief motorman
A、Seamen on board the ship are in two departments: Deck Department, Engine Department. B、Seaman on board the ship are in two department: Deck Department, Engine Department and Service Department. C、The Deck Department and the Engine Department are the two departments. D、Seamen on board the ship are in three departments: the Deck Department, the Engine Department and the Service Department.
A、Only the row with department ID 40 is deleted in the DEPARTMENTS table. B、The statement fails because there are child records in the EMPLOYEES table with department ID 40. C、The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 110 and 106 are deleted from the EMPLOYEES table. D、The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 106 and 110 and the employees working under employee 110 are deleted from the EMPLOYEES table. E、The row with department ID 40 is deleted in the DEPARTMENTS table. Also all the rows in the EMPLOYEES table are deleted. F、The statement fails because there are no columns specifies in the DELETE clause of the DELETE statement.
A、Only the row with department ID 40 is deleted in the DEPARTMENTS table. B、The statement fails because there are child records in the EMPLOYEES table with department ID 40. C、The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 110 and 106 are deleted from the EMPLOYEES table. D、The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 106 and 110 and the employees working under employee 110 are deleted from the EMPLOYEES table. E、The row with department ID 40 is deleted in the DEPARTMENTS table. Also all the rows in the EMPLOYEES table are deleted. F、The statement fails because there are no columns specifies in the DELETE clause of the DELETE statement.
A、The statement produces an error at line 1. B、The statement produces an error at line 3. C、The statement produces an error at line 6. D、The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company. E、The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.
A、A. remove the ORDER BY clause B、B. remove the table alias prefix from the WHERE clause C、C. remove the table alias from the SELECT clause D、D. prefix the column in the USING clause with the table alias E、E. prefix the column in the ORDER BY clause with the table alias F、F. replace the condition "d.department_id NOT IN (10,40)" in the WHERE clause with "d.department_id <> 10 AND d.department_id <> 40"