Physical database design for Analysis Services
Apart from the issue of modeling data in an appropriate way for Analysis Services, it's also important to understand how details of the physical implementation of the relational data mart can be significant too.
Multiple data sources
All of the dimension and fact tables you intend to use should exist within the same relational data source, so for example, if you're using SQL Server, this means all the tables involved should exist within the same SQL Server database. If you create multiple data sources within Analysis Services, then you'll find that one is treated as the primary data source; this has to point to an instance of SQL Server (either SQL Server 2000 or above) and all data from other data ...
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