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I'm waiting for the next CTP (September 05?) because it should work with cascading many-to-many dimensions. In a previous post I talked about the lack of functionality when you have more many-to-many dimensions chained together (I named this scenario "cascading many-to-many dimension"); I received feedback on this issue and it was a supported scenario, so what I described 3 months ago was a bug. What is important now is to understand performance in real-worlds scenario, because this kind of thing will tell us what dimensional modeling decisions will be best practice in different scenario.
This is a key feature to adopt Analysis Services 2005 in certain scenarios where today a SQL query could be better than a MDX one. The big challenge is that often many-to-many dimensions are paired with large dimensions (at least one). This bug prevented me to test some real-world scenario... If someone already has some "ideas" of numbers (we can't perf-test a Beta, I know...) let me know!
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About Marco Russo (SQLBI)
Marco Russo is a consultant, writer and trainer specialized in Business Intelligence with Microsoft technologies. He runs the SQLBI.COM website, which is dedicated to distribute resources useful for BI developers, like Integration Services components, Analysis Services models, tools, technical information and so on. Marco is certified as MCT, MCDBA, MCSD.NET, MCSA, MCSE+I.