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Oracle 1Z0-007 Exam Syllabus Topics:

Oracle Introduction to Oracle9i: SQL Sample Questions:

Question 1

Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables:

Which DELETE statement is valid?

A. DELETE * FROM employees WHERE employee_id = (SELECT employee_id FROM new_employees);
B. DELETE FROM employees WHERE employee_id = (SELECT employee_id FROM employees);
C. DELETE * FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE last_name = 'Carrey');
D. DELETE FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'Carrey');

Question 2

Examine the data of the EMPLOYEES table.
EMPLOYEES (EMPLOYEE_ID is the primary key. MGR_ID is the ID of managers and refers to the EMPLOYEE_ID)

Which statement lists the ID, name, and salary of the employee, and the ID and name of the employee's manager, for all the employees who have a manager and earn more than 4000?

A. SELECT employee_id "Emp_id", emp_name "Employee",
salary,
employee_id "Mgr_id", emp_name "Manager"
FROM employees
WHERE salary > 4000;
B. mgr_id "Mgr_id", m.emp_name "manager"
FROM employees e, employees m
WHERE e.mgr_id = m.employee_id
AND e.salary > 4000;
C. SELECT e.employee_id "Emp_id", e.emp_name "Employee",
D. salary,
E. employee_id "Mgr_id", m.emp_name "Manager"
FROM employees e, employees m
WHERE e.mgr_id = m.mgr_id
AND e.salary > 4000;
F. salary,
G. salary,
H. salary,
I. SELECT e.employee_id "Emp_id", e.emp_name "Employee",
J. SELECT e.employee_id "Emp_id", e.emp_name "Employee",
K. mgr_id "Mgr_id", m.emp_name "Manager"
FROM employees e, employees m
WHERE e.employee_id = m.employee_id
AND e.salary > 4000;
L. employee_id "Mgr_id", m.emp_name "Manager"
FROM employees e, employees m
WHERE e.mgr_id = m.employee_id
AND e.salary > 4000;
M. SELECT e.employee_id "Emp_id", e.emp_name "Employee",

Question 3

Examine the data from the ORDERS and CUSTOMERS table.

Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?

A. SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'Martin'));
B. SELECT ord_id, cust_id, ord_total
FROM orders, customers
WHERE cust_name='Mating'
AND ord_date IN ('18-JUL-2000','21-JUL-2000');
C. SELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust name = 'Martin');
D. SELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders, customers Where cust_name = 'Martin');

Question 4

Examine the structure of the EMPLOYEES and DEPARTMENTS tables:

Evaluate this SQL statement:
SELECT employee_id, e.department_id, department_name,
Salary
FROM employees e, departments d
WHERE e.department_id = d.department_id;
Which SQL statement is equivalent to the above SQL statement?

A. SELECT employee_id, department_id, department_name,
Salary
FROM employees
JOIN departments
USING (e.department_id, d.department_id);
B. SELECT employee_id, department_id, department_name, Salary FROM employees WHERE department_id IN (SELECT department_id FROM departments);
C. SELECT employee_id, d.department_id, department_name,
Salary
FROM employees e
JOIN departments d
ON e.department_id = d.department_id;
D. SELECT employee_id, department_id, department_name,
Salary
FROM employees
NATURAL JOIN departments;

Question 5

You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty.
Which statement accomplishes this task?

A. ALTER TABLE students
ADD CONSTRAINT PRIMARY KEY (student_id);
B. ALTER TABLE students
MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
C. ALTER TABLE students
ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;
D. ALTER TABLE students
ADD PRIMARY KEY student_id;
E. ALTER TABLE students
ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);

Solutions: