DB2 Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to DB2. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Which component is responsible for execution of SQL statements?

A - Locking Services Component

B - System Services Component

C - Database Services Component

D - Stored Procedures Component

Answer : C

Explanation

Database services component is responsible for execution of SQL statements and it manages buffer pool also.

Q 2 - Which table space houses only one table?

A - Simple Table space

B - Segmented Table space

C - Partitioned Table space

D - None of these

Answer : C

Explanation

A partitioned table space can house one table and allows a table to be divided by rows into partitions that the system can manage separately.

Q 3 - Write the query to delete all the rows from a table TAB.

A - DELETE TAB;

B - DELETE * FROM TAB;

C - DELETE * FROM TABLE TAB;

D - DROP * FROM TAB;

Answer : B

Explanation

DELETE * FROM table-name is the syntax to delete all the rows from a table.

Q 4 - What happens in BIND step in a DB2 program?

A - Bind step checks for data type matches

B - Bind contains SQL statements

C - Bind step converts all SQL statements to executables

D - None of these

Answer : C

Explanation

Bind step converts all the SQL statements into executable form in COBOL-DB2 program.

Q 5 - When you will face SQLCODE -805?

A - No Rows found satisfying the SQL statement or End of Cursor

B - Object not defined in DB2

C - Program has not been binded to the Plan

D - Duplicate Key on INSERT or UPDATE

Answer : C

Explanation

You will face SQLCODE = -805 when program has not been binded to the plan.

Q 6 - Which isolation level provides maximum concurrency?

Answer : D

Explanation

Uncommitted read provides maximum concurrency.

Q 7 - When a table is dropped all the synonyms get dropped automatically. State whether true or false?

A - False

B - True

Answer : B

Explanation

Synonyms get dropped automatically when we drop the table but alias of the table remains there.

Q 8 - Can we add columns to add table after defining it?

A - No

B - Yes

Answer : B

Explanation

Yes we can add columns after table declaration by using ALTER statement.

Q 9 - Embedded SQL statements works like normal SQL statements with some minor changes like output of query is directed to pre-defined set of variables which are referred as Host Variables. State whether true or false?

A - False

B - True