Oracle 1Z0-007 : Introduction to Oracle9i: SQL

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Oracle 1Z0-007 Exam Syllabus Topics:

Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Examine the data in the EMPLOYEES table.

On the EMPLOYEES table, EMPLOYEE_ID is the primary key. MGR_ID is the ID of managers and refers to the EMPLOYEE_ID. The JOB_ID column is a NOT NULL column.
Evaluate this DELETE statement:
DELETE employee_id, salary, job_id FROM employees WHERE dept_id = 90;
Why does the DELETE statement fail when you execute it?

A) You cannot specify column names in the DELETE clause of the DELETE statement.
B) You cannot delete the JOB_ID column because it is a NOT NULL column.
C) You cannot delete the EMPLOYEE_ID column because it is the primary key of the table.
D) There is no row with dept_id 90 in the EMPLOYEES table.

2. Examine these statements:
CREATE ROLE registrar;
GRANT UPDATE ON student_grades TO registrar;
GRANT registrar to user1, user2, user3;
What does this set of SQL statements do?

A) The set of statements contains an error and does not work.
B) It creates a role called REGISTRAR, adds the UPDATE privilege on the STUDENT_GRADES object to the role, and creates three users with the role.
C) It creates a role called REGISTRAR, adds the MODIFY privilege on the STUDENT_GRADES object to the role, and gives the REGISTRAR role to three users.
D) It creates a role called REGISTRAR, adds the UPDATE privilege on three users, and gives the REGISTRAR role to the STUDENT_GRADES object.
E) It creates a role called STUDENT_GRADES, adds the UPDATE privilege on three users, and gives the UPDATE role to the registrar.
F) It creates a role called REGISTRAR, adds the UPDATE privilege on the STUDENT_GRADES object to the role, and gives the REGISTRAR role to three users.

3. Which object privileges can be granted on a view?

A) DELETE, INSERT, SELECT, UPDATE
B) ALTER, DELETE, INSERT, SELECT
C) DELETE, INSERT,SELECT
D) none

4. Examine the description of the CUSTOMERS table:

The CUSTOMER_ID column is the primary key for the table.
Which statement returns the city address and the number of customers in the cities Los Angeles or San Francisco?

A) SELECT city_address, COUNT (*)
FROM customers
WHERE city address IN ( 'Los Angeles', 'San Fransisco')
GROUP BY city_address;
B) SELECT city_address, COUNT(customer_id)
FROM customers
WHERE city_address IN ( 'Los Angeles', 'San Fransisco')
GROUP BY city_address, customer_id;
C) SELECT city_address, COUNT(*)
FROM customers
WHERE city_address IN ( 'Los Angeles', 'San Fransisco');
D) SELECT city_address, COUNT (customer_id)
FROM customers
GROUP BY city_address IN ( 'Los Angeles', 'San Fransisco');

5. 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)

Evaluate this SQL statement:
SELECT e.employee_id "Emp_id", e.emp_name "Employee", e.salary,
m.employee_id "Mgr_id", m.emp_name "Manager"
FROM employees e, employees m
WHERE e.mgr_id = m.employee_id
AND e.salary > 4000;
What is its output?

A) Option B
B) Option D
C) Option C
D) Option A

Solutions: