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IBM Assessment: DB2 9 Family Fundamentals Sample Questions:

1. Which two of the following are optional and do not have to be specified when creating a table?

A) NOT NULL constraint
B) Column name
C) Table name
D) Default constraint
E) Column data type

2. Given the following two tables:
TAB1 C1 C2
A 11 B 12 C 13 TAB2 CX CY
A 21 C 22 D 23
The following results are desired:
C1 C2 CX CY A 11 A 21 C 13 C 22 -- -- D 23
Which of the following queries will yield the desired results?

A) SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cx
B) SELECT * FROM tab1 INNER JOIN tab2 ON c1=cx
C) SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cx
D) SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx

3. Which of the following is a NOT a valid reason for defining a view on a table?

A) Produce an action as a result of a change to a table
B) Ensure that rows inserted remain within the scope of a definition
C) Restrict users' access to a subset of table data
D) Provide users with an alternate view of table data

4. Given the following query:
SELECT quantity,
CASE WHEN itemcode = '099' THEN 'SILVER'
WHEN itemcode = '788' THEN 'GOLD'
WHEN itemcode = '899' THEN 'PLATINUM'
ELSE 'ERROR'
END
FROM supplier
What will be the result of the query if the following data is evaluated by the CASE expression?
SUPPLIER
QUANTITY ITEMCODE 3 099 4 099 1 788 1 899 5 009 3 788 1 899

A) 3,SILVER 4,SILVER 1,PLATINUM 1,ERROR 5,SILVER 3,GOLD 1,PLATINUM
B) 3,SILVER 4,SILVER 1,GOLD 1,GOLD 5,SILVER 3,ERROR 1,PLATINUM
C) 3,SILVER 4,GOLD 1,SILVER 1,GOLD 5,PLATINUM 3,SILVER 1,GOLD
D) 3,SILVER 4,SILVER 1,GOLD 1,PLATINUM 5,ERROR 3,GOLD 1,PLATINUM

5. Which of the following DB2 data types can be used to store 1000 MB of single-byte character data?

A) CLOB
B) DBCLOB
C) BLOB
D) GRAPHIC

Solutions: