Data Modeling is a process by which the enterprise business model is defined in terms of data elements and the relationships existing among those data elements.
There are three types of data models.
1)The conceptual model mostly suits business people.
2)The logical model which is derived from the conceptual model. It suits designers. It contains entity and attributes details.
3)The physical model which is derived from the Logical model. This mostly suits the Implementers. It is database specific.The level of abstraction is highly specific.
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