Oracle 1Z0-007 : Introduction to Oracle9i: SQL

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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. What is true about sequences?

A) Once created, a sequence belongs to a specific schema.
B) Once created, a sequence is automatically available to all users.
C) Once created, a sequence is linked to a specific table.
D) Once created, a sequence is automatically used in all INSERT and UPDATE statements.
E) Only the DBA can control which sequence is used by a certain table.

2. Examine the structure of the EMPLOYEES table:
EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25)
Which three statements inserts a row into the table? (Choose three)

A) INSERT INTO employees (employee_id) VALUES (1000);
B) INSERT INTO employees VALUES ('1000','John',NULL);
C) INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, 'John','');
D) INSERT INTO employees( first_name, last_name) VALUES('John','Smith');
E) INSERT INTO employees(first_name,last_name, employee_id) VALUES ( 1000, 'John','Smith');
F) INSERT INTO employees VALUES ( NULL, 'John','Smith');

3. 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 A
B) Option D
C) Option B
D) Option C

4. Which data dictionary table should you query to view the object privileges granted to the user on specific columns?

A) USER_COL_PRIVS_MADE
B) USER_TAB_PRIVS
C) USER_TAB_PRIVS_MADE
D) USER_COL_PRIVS

5. The CUSTOMERS table has these columns:
CUSTOMER_ID NUMBER(4) NOT NULL
CUSTOMER_NAME VARCHAR2(100) NOT NULL
CUSTOMER_ADDRESS VARCHAR2(150)
CUSTOMER_PHONE VARCHAR2(20)
You need to produce output that states "Dear Customer customer_name, ".
The customer_name data values come from the CUSTOMER_NAME column in the CUSTOMERS table.
Which statement produces this output?

A) SELECT 'Dear Customer ' || customer_name || ',' || FROM customers;
B) SELECT 'Dear Customer ' || customer_name || ',' FROM customers;
C) SELECT 'Dear Customer ' || customer_name ',' FROM customers;
D) SELECT dear customer, customer_name, FROM customers;
E) SELECT "Dear Customer", customer_name || ',' FROM customers;
F) SELECT "Dear Customer " || customer_name || "," FROM customers;

Solutions: