Program 2 - Part 1

You are a new employee of WaterWurx Inc. charged with the task of setting up an XML quoting and ordering system for WaterWurx's main product, a pair of hoses connected via a single valve. For the first portion of this task, you will be defining the XML schemas for each of the messages to be sent between WaterWurx (the vendor), the supplier, and the customer.

Hoses have a length, a diameter, and flow rate restrictions. Valves have an in diameter and an out diameter, flow rate restrictions, and a material of construction.

WaterWurx sells only assemblies (that is, two hoses and a valve, conjoined). The supplier only sells hoses and valves separately.

Messages travel between consumer and provider. In our scenario, the relationships are as below.

The customer is always the consumer; WaterWurx is a provider to customers, and a consumer to the supplier; and the supplier is always a provider. All messages contain complete contact information for both consumer and provider along with a date sent. Contact information includes items such as Name, Address, phone number, and email.

The messages to be encoded are:

• RFQ (Request for Quote)
  A customer is asking for pricing on any number of assemblies, or WaterWurx is asking for a price on any number of hoses and valves.


• Quote
  The requested prices from the RFQ are given, itemized by the items requested. References an RFQ. Items that cannot be quoted should be indicated.


• PO (Purchase Order)
  Any number of line items are being ordered for delivery. Contains the item, amount per line item, the total amount, and possibly a reference to a Quote.


• Bill
  An acknowledgment of a received PO with a billing request. Contains a reference to a PO, and the amount due.


• Payment
  A statement of payment. Contains a reference to a PO, the amount paid, and method of payment.


• Refund
  A statement of a refund given, containing the amount refunded, and a reference to a PO.


• Reminder
  A statement referencing a PO whose goods have not yet arrived at the destination.


• Return
  A statement of returning a PO and requesting a refund. References a PO.

Create an XML schema for each type of message, and place it in its own file named X.xsd with root node X, where X is the type of message. E.G. the xsd for Bill would be named Bill.xsd with root node named Bill. Create an example xml file that instantiates each schema and name it X.xml as well. Submit the xsd and xml files via the course locker. This assignment is due Monday 28 by 10:00 am.