Oracle 1Z0-007

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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Evaluate the SQL statement:
1 SELECT a.emp_name, a.sal, a.dept_id, b.maxsal 2 FROM employees a,
3 (SELECT dept_id, MAX(sal) maxsal
4.FROM employees
5.GROUP BY dept_id) b
6.WHERE a.dept_id = b.dept_id
7.AND a.sal < b.maxsal;
What is the result of the statement?

A) The statement produces an error at line 6.
B) The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company.
C) The statement produces an error at line 1.
D) The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.
E) The statement produces an error at line 3.

2. Which is an iSQL*Plus command?

A) RENAME
B) DESCRIBE
C) DELETE
D) INSERT
E) SELECT
F) UPDATE

3. You are the DBA for an academic database. You need to create a role that allows a group of users to modify existing rows in the STUDENT_GRADES table.
Which set of statements accomplishes this?

A) CREATE ROLE registrar; GRANT UPDATE ON student_grades TO registrar; GRANT registrar to user1, user2, user3;
B) CREATE ROLE registrar; GRANT UPDATE ON student_grades TO registrar; GRANT ROLE registrar to user1, user2, user3
C) CREATE registrar; GRANT CHANGE ON student_grades TO registrar; GRANT registrar;
D) CREATE ROLE registrar; GRANT MODIFY ON student_grades TO registrar; GRANT registrar to user1, user2, user3
E) CREATE NEW ROLE registrar; GRANT ALL ON student_grades TO registrar; GRANT registrar to user1, user2, user3

4. Which two statements accurately describe a role? (Choose two.)

A) A user can have access to a maximum of 10 roles.
B) A role can be given to a maximum of 1000 users.
C) Privileges are given to a role by using the CREATE ROLE statement.
D) A role can have a maximum of 100 privileges contained in it.
E) A role is a named group of related privileges that can be granted to the user.
F) A user can have access to several roles, and several users can be assigned the same role.

5. You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table.
Some of the employees may not have a phone number available.
Which data manipulation operation do you perform?

A) ENTER
B) MERGE
C) You cannot enter the phone numbers for the existing employee records.
D) ADD
E) INSERT
F) UPDATE

Solutions: