Architecture of Web Services
Although Web services are a concept introduced by Microsoft as a part of its .NET framework, the basic architecture behind a Web service can be used with other vendor software as well. The internal structure of a Web service can be divided into the following five logical layers or parts as shown in Figure 21.1:
Figure 21.1. The Architecture of Web Services consists of five layers.
Data layer— The innermost layer that stores the information used by a Web service. This layer is furthest from the client.
Data Access layer— As the name implies, this layer is used to access the data stored in the data layer. It exposes ...
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