What is a data schema?

A data schema is a blueprint that outlines the logical configuration of a database, detailing how data is organized within it.

It defines the tables, fields, data types, and relationships among these entities. Schemas often use visual representations to communicate the architecture of the database and serve as the foundation for an organization's data management discipline.

The process of designing a database schema is also known as data modeling.

A schema does not contain the actual data but describes the structure and constraints that apply to the data.

There are different types of schemas, such as conceptual, logical, and physical, each serving different roles and stakeholders within the database management system.