what is the purpose of entity relationship modelSolutionThe

what is the purpose of entity relationship model

Solution

The entity-relationship model allows us to sketch the design of a database informally. It defines the conceptual view of a database.
It works around real-world entities and the associations among them. At view level, the ER model is considered a
good option for designing databases.
Designs and pictures called entity-relationship diagrams.
Fairly mechanical ways to convert entity-relationship diagrams to real implementations like relational databases exist.

An entity can be a real-world object, either animate or inanimate, that can be easily identifiable.
For example, in a school database, teachers, students, courses offered, and classes can be considered as
entities. All these entities have some properties or attributes that give them their identity.

Entities are represented by means of their properties, called attributes. All the attributes have values.
For example, a student entity may have name, age, and class as attributes.