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Non parent-child dimension with fact data at different levels... How!

Posted By:      Posted Date: September 08, 2010    Points: 0   Category :Sql Server
Hi all, Quite new to SSAS, wondering if anyone could help with the following... I've got a dimension with attributes that indicate geographical location based upon UK postal boundaries - so ~1.8m Postcodes > ~10000 Postcode Sectors (PCDS) > ~3000 Postcode Districts (PCD) > ~100 Postcode Areas (PCA). The problem I have is that the address information is not of the highest quality. I have matched 50% of my facts to postcodes, of the remaining 50% i've mapped them to PCDS, PCD or PCA, where possible, leaving the lower-levels as NULL in those cases. My attribute hierarchy works fine where I have complete records all the way down the hierarchy, but I only have a single UNKNOWN member at the top (GOR) level. I want an UNKNOWN member at each level. It makes sense to me how to do this using a Parent-Child dimension, but i'm keen to avoid that as the performance is terrible. I'm hoping there's a method of configuring this. Any help massively appreciated.

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BJ Gordon
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