In the simplest terms, a logical data model is a visual representation of the business rules and requirements covering the universe-of-discourse for a given solution or enterprise, along with some ...

A logical model is similar to a flowchart diagram in many respects; if your goal is to gain an understanding of the business, use the logical model. Alternatively, the physical model is a view of the ...

Under far too many circumstances, those responsible for modeling data are ignoring the above perspective on primary keys and are simply defining surrogate keys for everything in their data model. One ...