Exception Handling in Programming Quiz

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What are run time errors?

Errors related to syntax

Errors caused by hardware issues

Errors detected before code execution

Errors that happen during code execution (correct)

How can a programming language's exception handling functionality be used to manage runtime errors?

By reporting errors after program termination

By preventing errors from occurring

By ignoring errors during execution

By catching errors and controlling the program's response to them (correct)

What are user defined errors?

Errors caused by the operating system

Errors that occur only during compilation

Errors that cannot be handled by exception handling

Logic decisions made by the programmer to treat certain conditions as errors (correct)

What does PL/SQL use exception handling for?

To ensure a program can continue operating in the presence of errors Signup and view all the answers

When is the exception section added in PL/SQL?

After the executable section Signup and view all the answers

Which syntax handles specific exception events in PL/SQL?

When clause Signup and view all the answers

Which of the following is a commonly used predefined exception in PL/SQL?

NO_DATA_FOUND Signup and view all the answers

Which predefined exception is used to handle the situation when multiple rows are returned by a SELECT INTO statement in PL/SQL?

TOO_MANY_ROWS Signup and view all the answers

Which predefined exception in PL/SQL is used for handling unique constraint violations?

DUP_VAL_ON_INDEX Signup and view all the answers

What is the predefined exception in PL/SQL used for handling unique constraint violations?

DUP_VAL_ON_INDEX Signup and view all the answers

When is DUP_VAL_ON_INDEX exception used in PL/SQL?

When trying to insert a duplicate value into a column constrained by a unique index Signup and view all the answers

What type of error does DUP_VAL_ON_INDEX handle in PL/SQL?

Unique constraint violations Signup and view all the answers

What is the exception raised when a SELECT INTO statement retrieves zero rows in PL/SQL?

NO_DATA_FOUND Signup and view all the answers

Which exception is raised when a SELECT INTO statement retrieves more than one row in PL/SQL?

TOO_MANY_ROWS Signup and view all the answers

What is executed first in a code block?

Initialization code Signup and view all the answers

How many exceptions can happen for an iteration/row data?

Only one if it is met Signup and view all the answers

Does exception handler code block only deal with errors?

No Signup and view all the answers

What is the purpose of using the OTHERS exception in PL/SQL when there is more than one exception handler?

To handle any unanticipated exceptions not explicitly handled by other exception handlers Signup and view all the answers

Why does the OTHERS exception not include hard-coded error messages in PL/SQL?

To allow flexibility in handling different types of exceptions without the need to modify the code Signup and view all the answers

What is used to identify the error message associated with the OTHERS exception in PL/SQL?

SQLERRM Signup and view all the answers

What must be controlled by the programmer in exception handling?

How the program ends Signup and view all the answers

How will the program end in a controlled manner after the ZERO_DIVIDE exception handler block is executed?

The program will continue executing normally Signup and view all the answers

How will the program end in an uncontrolled manner after the ZERO_DIVIDE exception handler block is executed?

The program will terminate abruptly Signup and view all the answers

Which exception handler is executed when there are no employees for the given department id?

NO_DATA_FOUND Signup and view all the answers

Which exception handler is executed when the department id is not a valid number?

INVALID_NUMBER Signup and view all the answers

What is the nature of Oracle non-predefined exceptions?

They occur automatically for specific events Signup and view all the answers

What are Oracle non-predefined exceptions not associated with?

Exception name Signup and view all the answers

How do you handle Oracle non-predefined exceptions in PL/SQL?

Use the 'OTHERS' exception or explicitly name the exception Signup and view all the answers

What is the purpose of the PRAGMA EXECPTION_INIT in PL/SQL?

To associate an exception with an error code Signup and view all the answers

What type of directive is PRAGMA in PL/SQL?

Compiler directive Signup and view all the answers

What are the two parameters required for the PRAGMA EXECPTION_INIT directive?

Exception name and error code Signup and view all the answers

In PL/SQL, what is the number for the error code when an exception variable must be created (always negative)?

-20000 Signup and view all the answers

In PL/SQL, when must the exception variable be created?

Before it is called Signup and view all the answers

In PL/SQL, what is the purpose of the error code being always negative?

To differentiate between predefined and non-predefined exceptions Signup and view all the answers

What is the purpose of creating a variable of type EXCEPTION in PL/SQL?

To define a specific type of error that can be raised and handled Signup and view all the answers

What is the purpose of the RAISE statement in PL/SQL?

To manually cause a runtime error to occur using a specified exception variable Signup and view all the answers

What happens if an unanticipated error occurs within a PL/SQL block?

The exception handler for OTHERS will catch the error and print out an error message Signup and view all the answers

What are the two steps involved in using RAISE in PL/SQL for exception handling?

Create a variable of type EXCEPTION for each handler needed, RAISE the error using this variable Signup and view all the answers

What is the purpose of creating a variable of type EXCEPTION in PL/SQL?

To use it for raising specific exceptions Signup and view all the answers

What is the example JSON format used for in PL/SQL?

To demonstrate exception handling Signup and view all the answers

What range of error codes is provided by Oracle for user-defined errors in PL/SQL?

-20000 to -20999 Signup and view all the answers

Which exception handler will catch errors raised using the RAISE_APPLICATION_ERROR procedure in PL/SQL?

OTHERS Signup and view all the answers

What happens if an error occurs within an anonymous block in PL/SQL that uses RAISE_APPLICATION_ERROR?

The error is caught and printed by the exception handler Signup and view all the answers

What does SQLCODE return inside the exception block in PL/SQL?

The numeric value of the error code associated with an exception Signup and view all the answers

What does SQLERRM return inside the exception block in PL/SQL?

The message associated with an error code Signup and view all the answers

What method is used to display a message to the screen for the OTHERS exception handler in PL/SQL?

DBMS_OUTPUT.PUT_LINE(SQLERRM) Signup and view all the answers

Why can't SQLERRM be used directly in an INSERT statement in PL/SQL?

Because of a size issue that the INSERT is unable to resolve Signup and view all the answers

Exception Handling in Programming Quiz

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Questions and Answers

What are run time errors?

How can a programming language's exception handling functionality be used to manage runtime errors?

What are user defined errors?

What does PL/SQL use exception handling for?

When is the exception section added in PL/SQL?

Which syntax handles specific exception events in PL/SQL?

Which of the following is a commonly used predefined exception in PL/SQL?

Which predefined exception is used to handle the situation when multiple rows are returned by a SELECT INTO statement in PL/SQL?

Which predefined exception in PL/SQL is used for handling unique constraint violations?

What is the predefined exception in PL/SQL used for handling unique constraint violations?

When is DUP_VAL_ON_INDEX exception used in PL/SQL?

What type of error does DUP_VAL_ON_INDEX handle in PL/SQL?

What is the exception raised when a SELECT INTO statement retrieves zero rows in PL/SQL?

Which exception is raised when a SELECT INTO statement retrieves more than one row in PL/SQL?

What is executed first in a code block?

How many exceptions can happen for an iteration/row data?

Does exception handler code block only deal with errors?

What is the purpose of using the OTHERS exception in PL/SQL when there is more than one exception handler?

Why does the OTHERS exception not include hard-coded error messages in PL/SQL?

What is used to identify the error message associated with the OTHERS exception in PL/SQL?

What must be controlled by the programmer in exception handling?

How will the program end in a controlled manner after the ZERO_DIVIDE exception handler block is executed?

How will the program end in an uncontrolled manner after the ZERO_DIVIDE exception handler block is executed?

Which exception handler is executed when there are no employees for the given department id?

Which exception handler is executed when the department id is not a valid number?

What is the nature of Oracle non-predefined exceptions?

What are Oracle non-predefined exceptions not associated with?

How do you handle Oracle non-predefined exceptions in PL/SQL?

What is the purpose of the PRAGMA EXECPTION_INIT in PL/SQL?

What type of directive is PRAGMA in PL/SQL?

What are the two parameters required for the PRAGMA EXECPTION_INIT directive?

In PL/SQL, what is the number for the error code when an exception variable must be created (always negative)?

In PL/SQL, when must the exception variable be created?

In PL/SQL, what is the purpose of the error code being always negative?

What is the purpose of creating a variable of type EXCEPTION in PL/SQL?

What is the purpose of the RAISE statement in PL/SQL?

What happens if an unanticipated error occurs within a PL/SQL block?

What are the two steps involved in using RAISE in PL/SQL for exception handling?

What is the purpose of creating a variable of type EXCEPTION in PL/SQL?

What is the example JSON format used for in PL/SQL?

What range of error codes is provided by Oracle for user-defined errors in PL/SQL?

Which exception handler will catch errors raised using the RAISE_APPLICATION_ERROR procedure in PL/SQL?

What happens if an error occurs within an anonymous block in PL/SQL that uses RAISE_APPLICATION_ERROR?

What does SQLCODE return inside the exception block in PL/SQL?

What does SQLERRM return inside the exception block in PL/SQL?

What method is used to display a message to the screen for the OTHERS exception handler in PL/SQL?

Why can't SQLERRM be used directly in an INSERT statement in PL/SQL?

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