File:ER_Diagram_MMORPG.svg · Wikimedia Commons · See Wikimedia Commons
entity-relationship model
Sign in to saveAlso known as ER model, entity-relationship modeling, ER modeling, EAR model, EAR modeling, ERD, ER schema, ERM
describes inter-related things of interest in a specific domain of knowledge;composed of entity types (which classify the things of interest) and specifies relationships that can exist between instances of those entity types
Wikidata facts
- Instance of
- modeling language
- Subclass of
- data model
Show 5 more facts
- Commons category
- Entity-relationship models
- topic's main category
- Category:Entity–relationship model
- Stack Exchange tag
- stackoverflow.com/tags/entity-relationship
- discoverer or inventor
- Peter Chen
- ACM Classification Code (2012)
- 10002959
Sources (2)
via Wikidata · CC0
~25 min read
Encyclopedic overview
An entity–attribute-relationship diagram for an MMORPG using Chen's notation
An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).
Excerpted from Wikipedia’s “entity-relationship model” article, available under the CC BY-SA 4.0 licence.