Universal Data Modeling

Chapter 10. Physical Modeling

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So far, you have learned about conceptual and logical data modeling. These processes help you take real-world business situations and turn them into clear agreements between business users and technical developers. They define what data is needed, what it means, and how different pieces of data should be structured. These steps are essential for designing data solutions. However, eventually, the database must actually run on a computer. The physical data model is the blueprint that turns the design into a real working system.

A physical data model takes the structures defined in the logical model and converts them into something a computer system can implement. It defines how the data is stored on disk, how it is accessed, and how it is optimized for performance. In other words, it turns the whole data model into a real implementation. This step ensures that the database works efficiently when handling real workloads, such as processing transactions, running queries, or supporting analytics. ...