The requirements for a logical and physical database vary by size and design parameters. A logical database must be able to access and identify all files within the storage system to operate ...

Physical Vs. Logical Data Independence. Let’s drill down to what data independence means at the physical and logical database layers. Physical data independence allows you to change how data is ...

Under usual circumstances, the one-to-many or many-to-many relationship, alone, drives the pattern used within the database model. Certainly, the logical database model should represent the proper ...

When building up a logical design, primary keys should be identified by the actual data points in play. Generated or surrogate keys should be held in abeyance until dealing with the physical design ...