Logical Adapter Reference Model
The logical adapter reference model consists of four layers: the access layer, the engine layer, the foundation layer, and the common component layer. These four layers define a solution to the four most common questions involved in software (adapter) modeling:
What features does the adapter provide to its users?
How are those features implemented?
What are the dependencies between the adapter and its hosting environment?
What information and services are common and shared by the various modules encapsulated by the layers?
Figure 4.5 shows the logical adapter reference model, its different layers, and the major modules (components) of each layer. The layers are stacked in a two-dimensional model, one dimension consisting ...
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