A logical data model is required before you can even begin to design a physical database ... other decisions that must be made during the transition from logical to physical. For example, each of the ...

Below is an example of a logical schema: A physical data model or physical schema is a representation of an implementation design; it defines data abstraction within physical parameters.

Implementing an efficient and trouble-free design ... data in a reasonable fashion. Once the logical model is in place, you can start applying what you’ve learned to the project’s physical ...