PL/SQL Procedures Quiz

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Questions and Answers

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

  • To execute SQL queries
  • To define parameters
  • To declare variables
  • To perform specific tasks (correct)

Which section is NOT typically found in the body of a PL/SQL stored procedure?

  • Exception section
  • Declaration section
  • Execution section
  • Print section (correct)

What is included in the header of a PL/SQL procedure?

  • SQL queries
  • Name of the procedure (correct)
  • Variable definitions
  • Exception handling

In PL/SQL, what are IN parameters used for?

<p>Passing values into the procedure or function (C)</p> Signup and view all the answers

Which of the following is NOT one of the ways to pass parameters in a PL/SQL procedure?

<p>PRINT parameters (A)</p> Signup and view all the answers

What should be present in the body of a PL/SQL stored procedure?

<p>Declaration, execution, and exception sections (B)</p> Signup and view all the answers

What does the 'CREATE OR REPLACE' option in a function syntax allow?

<p>Modifying an existing function (B)</p> Signup and view all the answers

In a function's parameter list, what does the 'IN' mode represent?

<p>Passing a value from outside (D)</p> Signup and view all the answers

What is the purpose of the 'RETURN' clause in a function?

<p>Returning a value from the function (A)</p> Signup and view all the answers

When creating a standalone function, which keyword is used instead of 'IS'?

<p>AS (C)</p> Signup and view all the answers

What is typically contained in the < function_body > of a function?

<p>Executable code (C)</p> Signup and view all the answers

In PL/SQL, what does 'set serveroutput on;' do?

<p>Enables displaying output messages on the server screen (A)</p> Signup and view all the answers

In PL/SQL, what is the main difference between a function and a procedure?

<p>A function must always return a value, while a procedure may or may not return a value. (C)</p> Signup and view all the answers

Which keyword is used in PL/SQL to create or replace a procedure?

<p>CREATE (D)</p> Signup and view all the answers

What output will be displayed by the following PL/SQL code snippet: dbms_output.put_line('Sum of two nos= '|| c);?

<p>Sum of two numbers concatenated with the value of variable c (B)</p> Signup and view all the answers

Which statement correctly drops a PL/SQL procedure named pro1?

<p>DROP PROCEDURE pro1; (A)</p> Signup and view all the answers

What is the purpose of the statement set serveroutput on; in PL/SQL?

<p>To display output in SQL*Plus or SQL Developer (C)</p> Signup and view all the answers

Which data type is used in the parameter a IN number in the PL/SQL procedure Sum?

<p><code>number</code> (C)</p> Signup and view all the answers

What is the primary advantage of using a stored procedure or function?

<p>Improves database performance (B)</p> Signup and view all the answers

Which statement is true regarding the difference between a stored procedure and a function?

<p>Stored procedures necessarily specify the datatype of the value to return, whereas functions may not. (B)</p> Signup and view all the answers

What does a stored procedure do that a function does not?

<p>Can be called from the function (D)</p> Signup and view all the answers

Which parameter type is specific to functions but not used in stored procedures?

<p>RETURN (A)</p> Signup and view all the answers

What is a key difference between a stored procedure and a function regarding return values?

<p>Functions do not need to specify the datatype for return values, but stored procedures do. (A)</p> Signup and view all the answers

Why are stored procedures and functions important in database management?

<p>They provide reusability and efficiency in code execution. (B)</p> Signup and view all the answers

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