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Data Modeling 201 for the cloud: designing databases for data warehouses

erwin

I first met Ralph in the early 1990’s while attending one of his seminars. Figure 3: A data model of an OLTP point-of-sale system. This is a data model of an OLTP convenient store point-of-sale and ordering system. Figure 4: A logical data model of the point-of-sale system before relationships are added.

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