Models
Data models are abstractions that represent real-world entities, relationships, and processes in a structured way. They are used to design databases and information systems, and serve as a blueprint for storing and retrieving data. Data models can be conceptual, logical, or physical, each providing a different level of detail and complexity. Conceptual data models focus on high-level concepts and relationships, while logical data models add more detail and define how data is stored and accessed. Physical data models map the logical data model to a specific database management system and take into account the physical storage constraints of the system.