Entity-Relationship Models (ERM) is an abstract conceptual representation of structured data. Entity-relationship modeling is a relational schema database modeling method, used in software engineering to produce a type of conceptual data model or semantic data model of a system, often a relational database, and its requirements in a top-down fashion. Diagrams created using this process are called entity-relationship diagrams, or ER diagrams or ERDs for short.
Originally proposed in 1976 by Peter Chen, many variants of the process have subsequently been devised.
Media in category "Entity-relationship models"
The following 54 files are in this category, out of 54 total.
- Data model in ER.png
- Data model in IE.png
- Entity-relationship mo...
- ER Diagram MMORPG.png
- ER Diagram MMORPG.svg
- Example ERD2.png
- Skos metamodel.png