Components Of Er Model In Dbms. E r diagrams are used to model real world objects like a person a car a company etc. Entity set and relationship set.
Entities attributes relationships an entity can be place person object event or a concept which stores data in the database dbms relationship is nothing but an association among two or more entities. Er model in dbms is based on three basic concepts. An entity relationship model er model describes the structure of a database with the help of a diagram which is known as entity relationship diagram er diagram.
It works around real world entities and the associations among them.
An entity can be a real world object either animate or inanimate that can be easily identifiable. An er diagram shows the relationship among entity sets. It works around real world entities and the associations among them. Entity set and relationship set.
