Now that we have set up all the necessary software and have built a simple application to verify it, we can start building real-life ADF applications. Remember that an ADF application consists of the following layers as:

In this chapter, we will concentrate on the Business Service layer. First, we will discuss business services in general, then we will build some necessary base components, and finally we will build the necessary ADF Business Components (ADF BC) for the sample application described in the introduction.