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Microsoft® SQL Server™ 2000 Programming by Example by Carlos Eduardo Rojas, Fernando G. Guerrero

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Client/Server Applications Design

You can design client/server applications to connect to SQL Server in many different ways. If you think about the basic activities every application does, you can group these activities in three conceptual layers:

  • Data—This layer deals with the actual data your application uses. Some data can be stored in a relational database; some other data can be stored somewhere else, on any other format.

  • Presentation—This layer is responsible for user interaction, accepting input from the user and presenting results to the user.

  • Business—This layer interacts with the data layer to access data, and with the presentation layer to receive user requests and send results. This layer enforces business rules and executes ...

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