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Question ID 4936

Which best describes an inline view?
 

Option A

A.    a schema object
 

Option B

B.    a sub query that can contain an ORDER BY clause
 

Option C

C.    another name for a view that contains group functions
 

Option D

D.    a sub query that is part of the FROM clause of another query
 

Correct Answer D
Explanation


Question ID 4937

Examine the structure of the EMPLOYEES and DEPARTMENTS tables:
EMPLOYEES
EMPLOYEE_ID NUMBER DEPARTMENT_ID NUMBER MANAGER_ID NUMBER LAST_NAME VARCHAR2(25)
DEPARTMENTS
DEPARTMENT_ID NUMBER MANAGER_ID NUMBER
DEPARTMENT_NAME VARCHAR2(35)
LOCATION_ID NUMBER
You want to create a report displaying employee last names, department names, and locations. Which query should you use to create an equi-join?
 

Option A

A.    SELECT last_name, department_name, location_id
FROM employees , departments ;
 

Option B

B.    SELECT employees.last_name, departments.department_name, departments.location_id
FROM employees e, departments D
WHERE e.department_id =d.department_id;
 

Option C

C.    SELECT e.last_name, d.department_name, d.location_id
FROM employees e, departments D WHERE manager_id =manager_id;
 

Option D

D.    SELECT e.last_name, d.department_name, d.location_id FROM employees e, departments D
WHERE e.department_id =d.department_id;
 

Correct Answer D
Explanation

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