In my August column, I began discussing some changes that have been creeping into information management because they are practical yet lack acceptance and codification. Specifically, I spoke of the role of the modern data warehouse and the sharing of its analytic function with the operational environment through the mechanisms of master data management (MDM), enterprise information integration (EII) and other operational forms of business intelligence (BI).
Keep in mind that neither EII nor anything else is a substitute for data warehousing. EII will have limited complex transformation and integration capabilities. Frequent federated-style processing with single queries integrating data across a large number of data sources can be restricted or have unacceptable performance. Likewise, transaction processing - when integrity constraints across data sources are complex - could keep EII off some selective mission-critical paths for a few users.
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