PeopleSoft : PIA(pure internent architecture)

*PIA is an N-tire architecture.
*It contain several components.
   1.web browser

   2.web server

• Web Services : The Program installed on host that manages the web server.
• Servlet Engine : The environment in which servlets run.
• Java Servlets
• PeopleSoft Servlets
• Portal servlet : Handles all of the req and formating for the user accessing PeopleSoft through the PeopleSoft Portal.
• Integration Gateway Servlet : Handles PeopleSoft-to-PeopleSoft messages,PeopleSoft to 3rd party messages and 3rd party to PeopleSoft messages.
• Report Repository Servlet : Enables users to easily access and distribute the output of batch reports such as crystal and sqr.
• Jolt : 
• Is an application layer network protocol that runs over TCP.
• Owned by BEA and was developed as the means for allowing Java applications to communicate with TUXEDO.
• Oracle TUXEDO
• It schedules PeopleSoft server process to perform the transactions.
• At run time, all business logic executes in Tuxedo.

  3)Application Server :

• Domains
• Listeners
• Handlers
• Queues
• Server Processes 

     3.