What is Data Modelling?

Data modeling is the process of creating a visual representation of data and its relationships within an information system. It's commonly used to define data requirements, improve data quality, and facilitate communication between stakeholders during system development. Data models can range from conceptual models showing high-level business concepts to logical models defining data types and constraints, and physical models outlining database schema and implementation details. They are crucial for designing efficient databases, ensuring data integrity, and supporting data-driven decision-making.