Entity relationship model, Database Management System

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Let us first look into some of the important features of ER model.

Entity relationship model is a high-level conceptual data model.
It permits us to define the data involved in a real-world enterprise in terms of objects and their relationships.
It is widely used to develop a first design of a database.
It gives a set of useful concepts that make it convenient for a developer to move from a basic set of information to a detailed and defined description of information that can be easily executed in a database system.
It defines data as a collection of relationships, entities and attributes.

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