PL/SQL Procedures

What is a PL/SQL procedure?

• A PL/SQL procedure is a type of programming language used for web development

• A PL/SQL procedure is a type of hardware component in a computer

• A PL/SQL procedure is a reusable set of SQL statements that can be called from other parts of the program.

• A PL/SQL procedure is a type of computer virus

What are the advantages of using PL/SQL procedures?

• Modularity, reusability, and improved performance

• Limited modularity, increased reusability, and decreased performance

• Decreased modularity, improved performance, and limited reusability

• Increased complexity, decreased performance, and limited reusability

Explain the syntax for creating a PL/SQL procedure.

• CREATE PROCEDURE procedure_name IS BEGIN -- procedure body END procedure_name;

• CREATE OR REPLACE PROCEDURE procedure_name (parameter1 datatype, parameter2 datatype, ...) IS / AS BEGIN -- procedure body END procedure_name;

• CREATE PROCEDURE procedure_name (parameter1 datatype, parameter2 datatype, ...) IS / AS BEGIN -- procedure body END;

• PROCEDURE procedure_name (parameter1 datatype, parameter2 datatype, ...) IS / AS BEGIN -- procedure body END procedure_name;

What is the purpose of the IS keyword in a PL/SQL procedure?

• To declare a variable in a PL/SQL procedure

• To declare the beginning of the executable part of a PL/SQL procedure.

• To end the executable part of a PL/SQL procedure

• To specify the return type of a PL/SQL procedure

How do you call a PL/SQL procedure from another procedure?

• By using the procedure name followed by the necessary parameters

• By using the UPDATE statement

• By using the INSERT statement

• By using the SELECT statement

What are the different types of parameters in a PL/SQL procedure?

• Required, Optional, Default

• A, B, C

• Input, Output, Both

• IN, OUT, and IN OUT

Explain the difference between IN, OUT, and IN OUT parameters in a PL/SQL procedure.

• IN parameters are used to return values from the procedure

• OUT parameters are used to send values into the procedure

• IN parameters are used to send values into the procedure, OUT parameters are used to return values from the procedure, and IN OUT parameters are used for both sending values into the procedure and returning values from the procedure.

• IN OUT parameters are used only for sending values into the procedure

What is the purpose of the RETURN statement in a PL/SQL procedure?

• To return a value from the procedure

• To declare a variable

• To stop the execution of the procedure

• To print a message to the console

How do you handle exceptions in a PL/SQL procedure?

• Using the IF-ELSE statement to handle exceptions

• Ignoring exceptions and letting the program crash

• Using the TRY-CATCH block to handle exceptions

• Using the EXCEPTION block to catch and handle specific exceptions.

Explain the concept of nested procedures in PL/SQL.

• Nested procedures in PL/SQL refer to the concept of defining a procedure within another procedure.

• Nested procedures in PL/SQL refer to creating a view within a procedure

• Nested procedures in PL/SQL refer to defining a trigger within a procedure

• Nested procedures in PL/SQL refer to using functions within a procedure