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C# 5.0 Unleashed by Bart De Smet

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Database Mappers

Almost no application today can live without some kind of data store. An obvious choice is the use of relational databases, ranging from simple Access files to full-fledged client/server database systems such as SQL Server or Oracle. While having library support for communicating with the database is a key facility present in the .NET Framework through the System.Data namespaces, there’s more to it.

One of the biggest challenges of database technologies is what’s known as impedance mismatch between code and data. Where databases consist of tables that potentially participate in relationships between one another, .NET is based on object-oriented programming; therefore, a need exists to establish a two-way mapping between relational ...

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