Thread: sockets in java programming(I just need some help)

Exercise
The bookshop has a angobookstore the distribution warehouse of books in every state. Each warehouse has its own autonomous information systems that communicate with the headquarters through sockets. when an order is made, the venue makes a query to the warehouse of the state where the customer resides in stock and if there in that warehouse, the headquarters sends an electronic order to the warehouse for order processing and shipment to the customer. in the warehouse of the state where the customer resides, there is no stock of some items to order, the headquarters makes a query to other warehouses, and those that have greater stock of each item will then be notified to refer these items to the warehouse of the state of client. customers make requests through a portal accessible via the Internet and that installed at Headquarters.

a) what the system architecture of enterprise information.
b) script of the database with customer requests at headquarters.
c) forming a first version of the code which responds to solicitation of orders.

I have already finish the database script.
I don't know how i can use a jsp as portal page with sockets , i just don' get it. By the way i have doubt is this really client-server aplication.
thanks.