Question

Question 1: Write the pseudocode for each of the modules identified in the following data flow diagram:

Help Desk STAFF Staff STAFF Login Help Desk Login Failed Authentication Request Authenticity User Name and Password Enter User Name and Password Login Denied Authentication Approval Denail Administrator Login Logged IN Authentication RAPID Help Desk Main Data Base Login Authenticated Administrator

Answer 1

=============================================
----------------------------------
PSEUDOCODE for Staff module
----------------------------------

BEGIN
   DISPLAY "STAFF Login"

   DISPLAY "Enter User Name"  
   READ userName

   DISPLAY "Enter Password"  
   READ password
  
   result = CALL REQUEST_AUTHENTICITY

   IF result EUQAL TO Approval
       DISPLAY "Logged IN"
   ELSE IF result EQUAL To Login_Dennied
       DISPLAY "Login Denied"
END

---------------------------------
REQUEST_AUTHENTICITY Module
---------------------------------
BIGIN REQUEST_AUTHENTICITY(userName,password)
   CHECK in RAPID_Help_Desk_database
   IF IS_Valid_Login
       RETURN Approved
   ELSE
       RETURN Login_Denied

   END IF
END REQUEST_AUTHENTICITY

----------------------------------
PSEUDOCODE for Help Desk STAFF module
----------------------------------

BEGIN
   DISPLAY "Help Desk Login"

   DISPLAY "Enter User Name"  
   READ userName

   DISPLAY "Enter Password"  
   READ password
  
   result = CALL REQUEST_AUTHENTICITY

   IF result EUQAL TO Approval
       DISPLAY "Logged IN"
   ELSE IF result EQUAL To Login_Dennied
       DISPLAY "Login Denied"
       DISPLAY "Failed Authetication"

END

----------------------------------
PSEUDOCODE for Administrator Login
----------------------------------
  
BEGIN
   DISPLAY "Administrator Login"

   DISPLAY "Enter User Name"  
   READ userName

   DISPLAY "Enter Password"  
   READ password
  
   result = CALL REQUEST_AUTHENTICITY

   IF result EUQAL TO Approval
       DISPLAY "Logged IN"
   ELSE IF result EQUAL To Login_Dennied
       DISPLAY "Login Denied"

END

=============================================