Oracle 1Z0-007 : Introduction to Oracle9i: SQL

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Oracle Introduction to Oracle9i: SQL Sample Questions:

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

2. You need to change the definition of an existing table. The COMMERCIALS table needs its DESCRIPTION column changed to hold varying length characters up to 2000 bytes. The column can currently hold 1000 bytes per value. The table contains 20000 rows.
Which statement is valid?

A) ALTER TABLE commercials
CHANGE (description CHAR2(2000));
B) ALTER TABLE commercials
MODIFY (description VARCHAR2(2000));
C) ALTER TABLE commercials
MODIFY (description CHAR2(2000));
D) You cannot increase the size of a column if the table has rows.
E) ALTER TABLE commercials
CHANGE (description VARCHAR2(2000));

3. Which three SELECT statements displays 2000 in the format "$2,000.00"? (Choose three)

A) SELECT TO CHAR (2000, '$9,999.00') FROM dual;
B) SELECT TO CHAR (2000, '$2,000.00') FROM dual;
C) SELECT TO CHAR (2000, '$0,000.00') FROM dual;
D) SELECT TO CHAR (2000, '$9,999.99') FROM dual;
E) SELECT TO CHAR (2000, '$N,NNN.NN') FROM dual;
F) SELECT TO CHAR (2000,'$#,###.##') FROM dual;

4. You need to create a table named ORDERS that contain four columns:
1.an ORDER_ID column of number data type
2.a CUSTOMER_ID column of number data type
3.an ORDER_STATUS column that contains a character data type
4.a DATE_ORDERED column to contain the date the order was placed.
When a row is inserted into the table, if no value is provided when the order was placed,
today's date should be used instead.
Which statement accomplishes this?

A) CREATE TABLE orders (
order_id NUMBER (10),
customer_id NUMBER (8),
order_status NUMBER (10),
date_ordered DATE DEFAULT SYSDATE);
B) CREATE OR REPLACE TABLE orders (
order_id NUMBER (10),
customer_id NUMBER (8),
order_status VARCHAR2 (10),
date_ordered DATE = SYSDATE);
C) CREATE TABLE orders (
order_id NUMBER (10),
customer_id NUMBER (8),
order_status NUMBER (10),
date_ordered DATE = SYSDATE);
D) CREATE TABLE orders (
order_id NUMBER (10),
customer_id NUMBER (8),
order_status VARCHAR2 (10),
date_ordered DATE = SYSDATE);
E) CREATE TABLE orders (
order_id NUMBER (10),
customer_id NUMBER (8),
order_status VARCHAR2 (10),
date_ordered DATE DEFAULT SYSDATE);
F) CREATE OR REPLACE TABLE orders (
order_id NUMBER (10),
customer_id NUMBER (8),
order_status VARCHAR2 (10),
date_ordered DATE DEFAULT SYSDATE);

5. Which two are true about aggregate functions? (Choose two.)

A) You can pass column names, expressions, constants, or functions as parameters to an aggregate function.
B) You can use aggregate functions on a table, only by grouping the whole table as one single group.
C) You can use aggregate functions in any clause of a SELECT statement.
D) You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns.
E) You can use aggregate functions only in the column list of the SELECT clause and in the WHERE clause of a SELECT statement.
F) You cannot group the rows of a table by more than one column while using aggregate functions.

Solutions: