Oracle 9i DBA 1Z0-007

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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Examine the structure of the EMPLOYEES and DEPARTMENTS tables:

You want to create a report displaying employee last names, department names, and locations. Which query should you use to create an equi-join?

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

2. Evaluate this SQL statement:
SELECT ename, sal, 12*sal+100 FROM emp;
The SAL column stores the monthly salary of the employee. Which change must be made
to the above syntax to calculate the annual compensation as "monthly salary plus a
monthly bonus of $100, multiplied by 12"?

A) SELECT ename, sal, (12*sal)+100 FROM emp;
B) SELECT ename, sal+100,*12 FROM emp;
C) SELECT ename, sal, 12*(sal+100) FROM emp;
D) No change is required to achieve the desired results.

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

4. Examine the data from the EMP table. Evaluate this SQL statement:
SELECT * FROM emp WHERE commission = (SELECT commission FROM emp
WHERE emp_id=3);
What is the result when the query is executed?

A) Exhibit A
B) The query fails because the outer query is retrieving more than one column
C) Exhibit B
D) The query returns no rows
E) The query fails because both the inner and outer queries are retrieving data from the same table.

5. The CUSTOMERS table has these columns:

A promotional sale is being advertised to the customers in France. Which WHERE clause identifies customers that are located in France?

A) WHERE lower(country_address) = '%france%'
B) WHERE lower(country_address) IS 'france'
C) WHERE lower(country_address) = 'france'
D) WHERE lower(country_address) = "france"
E) WHERE lower(country_address) LIKE %france%

Solutions: