What is the role of the data model in database management system [DBMS]?

Role of the data model in DBMS

Data model is structure in a graphical form to represent the database look like in their structure.
Data model represents the organization structure in a graphical form where the database has so many relationships of the entity.
Entity is a group of data, where the data is in a relation to another data.
Entity is also called group of information, where the information is meaningful sentence in a description or character type data.
The component of entity such as name, gender, address etc. are called attributes of the entity.
You can connect the entity to entity with their properties if the properties of both entities are matched to each other.

entities of sales manager and sales employee with sales department

The image reference shows you the sales manager is connected to the sales employee with their property of the Sales Department. There are three entities in the structure or model of the database are Sales Manager and Sale employee are their attribute is Sales department.

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