An operational data store (or “ODS”) is a database designed to integrate data from multiple sources for additional operations on the data. The data is then passed back to operational systems for further operations and to the data warehouse for reporting. Because the data originates from multiple sources, the
Operational Source Systems are the systems of record that capture the transactions of the business. The source systems are usually different than the data warehouse because presumably we have little to no control over the content and format of the data in these operational legacy systems.
In Ralph Kimball’s book “The Data Warehouse Toolkit” he describes the basic elements of a data warehouse. There are essentially four main components: Operational Source Systems, Data Staging Area, Data Presentation Area, and Data Access Tools. Although Operational Source Systems is part of the model, Kimball states “The source systems should really [...]
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