What do you mean by E-R Model & Object-oriented Model?
An Entity-Relationship model is primarily used to represent the real scenarios as entities. E-R model clearly defines the objects and the relations between the entities
An Object-oriented Model is mainly used to represent the real scenarios as objects. The objects with similar functions are grouped and linked to the other different purposes.in this model, the data can be reused in various missions.
Note:-This is the important RDBMS interview questions.