We are looking at the future architecture of our data warehouse. We currently have several account-level fact tables developed for different applications. These duplicate a lot of the data, and I am wondering whether this is the correct approach. Would it not be better to consolidate these into one fact table for the enterprise and then have different aggregates and access methods for each application? Should the detailed level fact tables be part of the enterprise data warehouse, or should they be data marts for specific purposes?
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