The System.Data.SqlTypes namespace contains classes for SQL Server's native data types, such as money , tinyint , and varchar . These classes can provide faster access (because typecasting isn't required), and eliminate conversion errors. Chapter 5 describes the DataReader methods you can use to retrieve database values in their native format. However, this technique is rarely required. Figure 38-1 shows the types in this namespace.
Figure 38-1. The System.Data.SqlTypes namespace