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Oracle 1Z0-007 Exam Syllabus Topics:

Oracle Introduction to Oracle9i: SQL Sample Questions:

Question 1

Exhibit:

Examine the data in the EMPLOYEES table.
Examine the subquery:
SELECT last_name FROM employees WHERE salary IN (SELECT MAX(salary) FROM employees GROUP BY department_id);
Which statement is true?

A. The SELECT statement does not work because there is no HAVING clause.
B. The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list.
C. The SELECT statement does not work because the GROUP BY clause should be in the
main query and not in the subquery.
D. The SELECT statement is syntactically accurate.

Question 2

The EMP table has these columns:

Management wants a list of names of employees who have been with the company for more than five years. Which SQL statement displays the required results?

A. SELECT ENAME FROM EMP WHERE (SYSDATE-HIRE_DATE)* 365 > 5;
B. SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE > 5;
C. SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE > 5;
D. SELECT ENAME FROM EMP WHERE (SYSDATE-HIRE_DATE)/365 > 5;

Question 3

Examine the structures of the EMPLOYEES and TAX tables.

You need to find the percentage tax applicable for each employee. Which SQL statement would you use?

A. SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE MIN(e.salary) = t.min_salary AND MAX(e.salary) = t.max_salary
B. SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary > t.min_salary, tax_percent
C. SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary BETWEEN t.min_salary AND t.max_salary;
D. You cannot find the information because there is no common column between the two tables.

Question 4

Examine the data from the ORDERS and CUSTOMERS tables.

Evaluate the SQL statement:
SELECT * FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'Smith');
What is the result when the query is executed?

A. Option E
B. Option A
C. Option C
D. Option D
E. Option B

Question 5

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

Solutions: