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Building a Multi-tiered Application
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To create a multi-tiered database application

1. Create the application server.
2. Register or install the application server.
3. Create a client application.

The order of creation is important. You should create and run the application server before you create a client. At design time, you can then connect to the application server to test your client. You can, of course, create a client without specifying the application server at design time, and only supply the server name at runtime. However, doing so prevents you from seeing if your application works as expected when you code at design time, and you will not be able to choose servers and providers using the Object Inspector.
Note: If you are not creating the client application on the same system as the server, and you are using a DCOM connection, you may want to register the application server on the client system. This makes the connection component aware of the application server at design time so that you can choose server names and provider names from a drop-down list in the Object Inspector
. (If you are using a Web connection, SOAP connection, or socket connection, the connection component fetches the names of registered providers from the server machine.)
See Also

Understanding MIDAS Technology

Advantages of the Multi-tiered Database Model

Writing Web-based client applications

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