BUS Schema is composed of a master suite of confirmed dimension and standardized definition if facts.

In a BUS schema we would eventually have conformed dimensions and facts defined to be shared across all enterprise data marts. This way all Data Marts can use the conformed dimensions and facts without having them locally. This is the first step towards building an enterprise Data Warehouse from Kimball's perspective. For (e.g) we may have different data marts for Sales, Inventory and Marketing and we need common entities like Customer, Product etc to be seen across these data marts and hence would be ideal to have these as Conformed objects. The challenge here is that some times each line of business may have different definitions for these conformed objects and hence choosing conformed objects have to be designed with some extra care.

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