SQL Exception Handling MCQ Questions and Answers
This section focuses on the "Exception Handling" in SQL. These Multiple Choice Questions (mcq) should be practiced to improve the SQL skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
1. How many types of exception are there in sql?
A. 2
B. 3
C. 4
D. 5
View Answer
Ans : A
Explanation: There are two types of exceptions : System-defined exceptions
and User-defined exceptions
2. Name the exception which is raised when a null object is automatically assigned a value?
A. CASE_NOT_FOUND
B. COLLECTION_IS_NULL
C. ACCESS_INTO_NULL
D. DUP_VAL_ON_INDEX
View Answer
Ans : C
Explanation: ACCESS_INTO_NULL : It is raised when a null object is automatically assigned a value.
3. What is oracle error code for exception COLLECTION_IS_NULL?
A. "06530"
B. "06592"
C. "06531"
D. "01722"
View Answer
Ans : C
Explanation: oracle error code for exception COLLECTION_IS_NULL is 06531.
4. What is true about PROGRAM_ERROR?
A. It is raised when a SELECT INTO statement returns no rows.
B. It is raised when PL/SQL has an internal problem.
C. It is raised when PL/SQL ran out of memory or memory was corrupted.
D. It is raised when a SELECT INTO statement returns more than one row.
View Answer
Ans : B
Explanation: PROGRAM_ERROR : It is raised when PL/SQL has an internal problem.
5. An exception is an error condition during a program execution.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: An exception is an error condition during a program execution
6. The default exception will be handled using?
A. Default Keyword
B. WHEN THEN Keyword
C. WHEN Keyword
D. WHEN others THEN Keyword
View Answer
Ans : D
Explanation: The default exception will be handled using WHEN others THEN.
7. Which of the following exception raised when an arithmetic, conversion, truncation, or sizeconstraint error occurs?
A. ZERO_DIVIDE
B. VALUE_ERROR
C. TOO_MANY_ROWS
D. SELF_IS_NULL
View Answer
Ans : B
Explanation: VALUE_ERROR : It is raised when an arithmetic, conversion, truncation, or sizeconstraint error occurs.
8. What is the sql error code for SELF_IS_NULL?
A. "-6504"
B. "-30625"
C. "-1422"
D. "-6502"
View Answer
Ans : B
Explanation: SELF_IS_NULL errorcode(-30625) : It is raised when a member method is invoked, but the instance of the object type was not initialized.
9. Point out the correct statement.
A. While executing some DML Statement like INSERT, DELETE, UPDATE we can handle the error for checking proper output
B. If transaction fails, then we need to commit – This can be done by error handling
C. If transaction succeeds, then we need to rollback – This can be done by error handling
D. All of the above
View Answer
Ans : A
Explanation: SQL Server also has an exception model to handle exceptions and errors that occurs in T-SQL statements.
10. Which statements can be checked for handling errors.
A. DDL
B. TCL
C. DML
D. TTL
View Answer
Ans : C
Explanation: DML statements can be checked for handling errors.
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