Implementing the Data Access Layer
In the past several chapters, you have looked at various object-oriented programming constructs such as classes, inheritance, and polymorphism as they are implemented in C# code. You have been introduced to and practiced using the Visual Studio integrated development environment. You should also have a firm understanding of how class structures and object collaboration are implemented.
You are now ready to put the pieces together and develop a working application. Because most business applications involve working with and updating data in a back-end relational database, you will look at how the ...