SQL Exception Handling MCQ Questions and Answers

Exception Handling MCQs : 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

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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

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3. What is oracle error code for exception COLLECTION_IS_NULL?

A. "06530"
B. "06592"
C. "06531"
D. "01722"

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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.

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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

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6. The default exception will be handled using?

A. Default Keyword
B. WHEN THEN Keyword
C. WHEN Keyword
D. WHEN others THEN Keyword

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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

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8. What is the sql error code for SELF_IS_NULL?

A. "-6504"
B. "-30625"
C. "-1422"
D. "-6502"

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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

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10. Which statements can be checked for handling errors.

A. DDL
B. TCL
C. DML
D. TTL

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11. Which Exception is also known as Oracle named exception handler?

A. Predefined Exception
B. Internal Exception
C. User defined Exception
D. None of the above

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12. When creating a function, in which section will you typically find a return key word?

A. Header Only
B. Declarative
C. Executable and Header
D. Executable and exception handling

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13. Which of the following returns the current error message text?

A. SQLERRM
B. SQLCODE
C. Both A and B
D. None of the above

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14. For a user-defined exception, SQLCODE returns 1, and SQLERRM returns ___________.

A. 1
B. User-defined Exception
C. 0
D. Predefined Exception

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15. Which of the following is true?

A. The keyword All is a shorthand way to refer to all warning messages.
B. In internal exception oracle raises the exception for you implicitly. You still need to declare the exception and handle it, but you don’t need to raise it.
C. An exception handling block is used so that we can avoid the errors in the program
D. All of the above

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16. Which of the following is a global variable for error handling?

A. "@@ERRORS"
B. "@ERRORS"
C. "@@ERR"
D. "@@ERRORS"

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17. ERROR_SEVERITY() returns the ________level of the error.

A. State number
B. Full text
C. Severity
D. None of the above

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18. Which of the following is an Error function used within CATCH block?

A. ERROR_STATUS()
B. ERROR_STATE()
C. ERROR_MSG()
D. None of the above

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19. Exception handling is possible in SQL Server using _____________

A. FINAL
B. FINALLY
C. THROW
D. THROWS

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20. Which of the following benefit does Exception handling with the TRY and CATCH blocks provide?

A. Exceptions provide a mechanism to signal errors directly rather than using some side effects
B. Exceptions can be seen by the programmer and checked during the compilation process
C. Exceptions provide a clean way to check for errors without cluttering code
D. All of the above

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