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Oracle Introduction to Oracle9i: SQL Sample Questions:

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

2. You need to perform these tasks:
1.Create and assign a MANAGER role to Blake and Clark
2.Grant CREATE TABLE and CREATE VIEW privileges to Blake and Clark
Which set of SQL statements achieves the desired results?

A) GRANT manager ROLE TO BLAKE,CLARK;
GRANT create table, create voew
TO BLAKE CLARK;
***MISSING***
B) CREATE ROLE manager;
GRANT create table, create voew
TO manager;
GRANT manager ROLE TO BLAKE,CLARK;
C) CREATE ROLE manager;
GRANT create table, create view
TO manager;
GRANT manager TO BLAKE,CLARK;

3. For which two constraints does the Oracle Server implicitly create a unique index? (Choose two.)

A) FOREIGN KEY
B) CHECK
C) NOT NULL
D) UNIQUE
E) PRIMARY KEY

4. Which statement describes the ROWID data type?

A) Raw binary data of variable length up to 2 gigabytes.
B) Binary data stored in an external file, up to 4 gigabytes.
C) Character data up to 4 gigabytes.
D) A hexadecimal string representing the unique address of a row in its table.
E) Binary data up to 4 gigabytes.

5. Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables:

Which DELETE statement is valid?

A) DELETE FROM employees
WHERE employee_id IN (SELECT employee_id
FROM new_employees
WHERE name = 'Carrey');
B) DELETE FROM employees
WHERE employee_id = (SELECT employee_id FROM employees);
C) DELETE * FROM employees
WHERE employee_id IN (SELECT employee_id
FROM new_employees
WHERE name = 'Carrey');
D) DELETE * FROM employees
WHERE employee_id=(SELECT employee_id FROM new_employees);

Solutions: