What is E-R data model?

The Entity-Relationship Model is often referred to as a

semantic data model, because it more closely resembles real

world scenariOS than, e.g., the relational model.

. In the ER model, we model the concept of "Instructors."

In the relational model we deal with names and phone

numbers.

. In the ER model, there is a distinction between entities

(objects) and relationships between such entities.

In the relational model, both concepts are represented by

relations.