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Updated: Sep 03, 2025
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Oracle Introduction to Oracle9i: SQL Sample Questions:
1. Examine the SQL statements that create ORDERS table:
For which columns would an index be automatically created when you execute the above
SQL statement? (Choose two)
A) ORD_TOTAL
B) ORDER_ID
C) Composite index on ORDER_ID and ORDER_DATE
D) STATUS
E) SER_NO
F) PROD_ID
2. In which four clauses can a subquery be used? (Choose four.)
A) in the FROM clause of a SELECT statement
B) in the VALUES clause of an INSERT statement
C) in the INTO clause of an INSERT statement
D) in the SET clause of an UPDATE statement
E) in the GROUP BY clause of a SELECT statement
F) in the WHERE clause of a SELECT statement
3. You need to display the last names of those employees who have the letter "A" as the second character in their names.
Which SQL statement displays the required results?
A) SELECT last_name FROM EMP WHERE last name LIKE '*A%'
B) SELECT last_name FROM EMP WHERE last_name LIKE '_A%';
C) SELECT last_name FROM EMP WHERE last name ='*A%'
D) SELECT last_name FROM EMP WHERE last name ='_A%';
4. 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 e.salary BETWEEN t.min_salary AND t.max_salary;
B) SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary > t.min_salary, tax_percent
C) You cannot find the information because there is no common column between the two tables.
D) 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
5. The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12)
SEMESTER_END DATE
GPA NUMBER(4,3)
The registrar requested a report listing the students' grade point averages (GPA) sorted from highest grade point average to lowest.
Which statement produces a report that displays the student ID and GPA in the sorted order requested by the registrar?
A) SELECT student_id, gpa FROM student_grades ORDER BY gpa ASC;
B) SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa;
C) SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa ASC;
D) SELECT student_id, gpa FROM student_grades ORDER BY gpa DESC;
E) SELECT student_id, gpa FROM student_grades ORDER BY gpa;
F) SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa DESC;
Solutions:
| Question # 1 Answer: C,E | Question # 2 Answer: A,C,D,F | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: D |
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