Work with datasets in n-tier applications
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
N-tier data applications are data-centric applications that are separated into multiple logical layers (or tiers). In other words, an n-tier data application is an application that is separated into multiple projects, with the data access tier, the business logic tier, and the presentation tier each in its own project. For more information, see N-Tier data applications overview.
Typed datasets have been enhanced so that the TableAdapters and dataset classes can be generated into discrete projects. This provides the ability to quickly separate application layers and generate n-tier data applications.
N-tier support in typed datasets enables iterative development of the application architecture to an n-tier design.It also removes the requirement to manually separate the code into more than one project. Start out designing the data layer by using the Dataset Designer. When you're ready to take the application architecture to an n-tiered design, set the DataSet Project property of a dataset to generate the dataset class into a separate project.
Reference
See also
- N-Tier data applications overview
- Walkthrough: Creating an n-tier Data Application
- Add code to TableAdapters in n-tier applications
- Add code to datasets in n-tier applications
- Add validation to an n-tier dataset
- Separate datasets and TableAdapters into different projects
- Hierarchical update
- Dataset tools in Visual Studio
- Accessing data in Visual Studio
- Create and configure TableAdapters
- N-Tier and remote applications with LINQ to SQL