Chapter 2. Framework Design
In Chapter 1, I discussed some general concepts about physical and logical n-tier architecture, including a 5-layer model for describing systems logically. In this chapter, I take that 5-layer logical model and expand it into a framework design. Specifically, this chapter will map the logical layers against the technologies illustrated in Figure 2-1.
The CSLA .NET framework itself will focus on the Business Logic and Data Access layers. This is primarily due to the fact that there are already powerful technologies for building Windows, web (browser-based and XML-based services), and mobile interface layers. Also, there are already powerful data-storage options available, including SQL Server, Oracle, DB2, XML documents, ...
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