The Data model is specified as a collection of conceptual tools for describing data, data relationships, data semantics and constraints. These models are used to describe the relationship between the entities and their attributes.

There is the number of data models:

Hierarchical data model
network model
relational model
Entity-Relationship model and so on.

A data model is a conceptual representation of how data is structured and organized within a database system. It defines the logical structure of the data and the relationships between different data elements. Data models can be graphical or textual representations that provide a framework for understanding and manipulating data within a database. They help developers and database administrators design databases, define data integrity constraints, and implement data manipulation operations such as querying and updating. Common types of data models include hierarchical, network, relational, and object-oriented models.