Tuesday, September 02, 2014

SSAS Tutorial : Defining a DataSource

After you create an Analysis Services project, you generally start working with the project by defining one or more data sources that the project will use. When you define a data source, you are defining the connection string information that will be used to connect to the data source.
To define a new data source:
1.        Solution Explorer (on the right of the Microsoft Visual Studio window), right-click Data Sources, and then click New Data Source.
2.       On the Welcome to the Data Source Wizard page of the Data Source Wizard, click Next to open the Select how to define the connection page.
3.       On the Select how to define the connection page, you can define a data source based on a new connection, based on an existing connection, or based on a previously defined data source object. In this tutorial, you define a data source based on a new connection. Verify that Create a data source based on an existing or new connectionis selected, and then click New.
4.       In the Connection Manager dialog box, you define connection properties for the data source. In the Provider list box, verify that Native OLE DB\SQL Server Native Client 11.0 is selected.Analysis Services also supports other providers, which are displayed in the Providerlist.
5.       In the Server name text box, type localhost.To connect to a named instance on your local computer, type localhost\<instance name>. To connect to the specific computer instead of the local computer, type the computer name or IP address.
6.       Verify that Use Windows Authentication is selected. In the Select or enter a database name list, select AdventureWorksDW2012.
7.       Click Test Connection to test the connection to the database.
8.       Click OK, and then click Next.
9.       On the Impersonation Information page of the wizard, you define the security credentials for Analysis Services to use to connect to the data source. Impersonation affects the Windows account used to connect to the data source when Windows Authentication is selected. Analysis Services does not support impersonation for processing OLAP objects. Select Use the service account, and then click Next.

10.   On the Completing the Wizard page, accept the default name, Adventure Works DW 2012, and then click Finish to create the new data source.


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