Both differed in the concept of building teh datawarehosue..

According to Kimball ...

Kimball views data warehousing as a constituency of data marts. Data marts are focused on delivering business objectives for departments in the organization. And the data warehouse is a conformed dimension of the data marts. Hence a unified view of the enterprise can be obtain from the dimension modeling on a local departmental level.

Inmon beliefs in creating a data warehouse on a subject-by-subject area basis. Hence the development of the data warehouse can start with data from the online store. Other subject areas can be added to the data warehouse as their needs arise. Point-of-sale (POS) data can be added later if management decides it is necessary.



i.e.,

Kimball--First DataMarts--Combined way ---Datawarehouse

Inmon---First Datawarehouse--Later----Datamarts

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