ERmodellek
ERmodellek are a family of conceptual data models used in database design to describe the structure of information and the relationships between data items. They aim to capture facts about a domain at a level that is independent of a specific database technology, providing a foundation for analysis, communication, and later schema implementation.
An ERmodellek typically comprises entities, attributes, and relationships. An entity represents a discrete object or concept
Diagrams use notation systems such as Chen notation or Crow's Foot notation to visualize these elements. ERmodellek
Limitations include potential over-simplification for complex domains and the need to evolve to physical database designs.