In the previous chapter, we created a WCF service with two layers. We didn't add the third layer, that is, the data access layer. Therefore, all of the service operations just returned a fake result from the business logic layer.
In this chapter, we will add the third layer to the WCF service. We will also introduce message contracts for service message exchange and fault contracts for service error handling.
We will accomplish the following tasks in this chapter:
Northwinddatabase for the service