The logical model is built on sets of data. For a more in-depth explanation of the ER model, visit the ITS Database Services Web site or the Mapping an ER Model to the Relational Model Web site (a ...

The entity-relationship (ER) data modeling technique represents entities and relationships between them in a graphical format consisting of Entities, Attributes, and Relationships.

What does EVERYTHING mean? As the answers to these questions are unraveled, the data model arises. Your data model is a creature built of logic and as such is something that can be easily digested by ...

One might be kind when confronted with a data model where everything has a generated primary key and assume such models are physical-only data models. And further assume that were someone to make an ...