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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Examine the SQL statements that create ORDERS table:

For which columns would an index be automatically created when you execute the above
SQL statement? (Choose two)

A) Composite index on ORDER_ID and ORDER_DATE
B) ORD_TOTAL
C) ORDER_ID
D) PROD_ID
E) SER_NO
F) STATUS

2. Evaluate the SQL statement:
SELECT ROUND(45.953, -1), TRUNC(45.936, 2)
FROM dual;
Which values are displayed?

A) 45.95 and 45.93
B) 45 and 45.93
C) 50 and 45.93
D) 46 and 45
E) 46 and 45.93
F) 50 and 45.9

3. What is true of using group functions on columns that contain NULL values?

A) Group functions on columns returning dates include NULL values.
B) Group functions on columns returning numbers include NULL values.
C) Group functions on columns cannot be accurately used on columns that contain NULL values.
D) Group functions on columns ignore NULL values.
E) Group functions on columns include NULL values in calculations if you use the keyword INC_NULLS.

4. The PRODUCTS table has these columns:
PRODUCT_ID NUMBER (4)
PRODUCT_NAME VARCHAR2(45)
PRICE NUMBER(8,2)
Evaluate this SQL statement:
SELECT *
FROM PRODUCTS
ORDER BY price, product_name;
What is true about the SQL statement?

A) The results are not sorted.
B) The results are sorted numerically and then alphabetically.
C) The results are sorted alphabetically.
D) The results are sorted numerically.

5. Which statement creates a new user?

A) CREATE NEW USER susan DEFAULT;
B) CREATE USER susan IDENTIFIED BY blue;
C) CREATE OR REPLACE USER susan IDENTIFIED BY blue;
D) CREATE OR REPLACE USER susan;
E) CREATE USER susan;
F) CREATE NEW USER susan IDENTIFIED by blue;

Solutions: