What Does Entity-Relationship Model (ER Model) Mean?
An entity-relationship model (ERM) is a theoretical and conceptual way of showing data relationships in software development. ERM is a database modeling technique that generates an abstract diagram or visual representation of a system’s data that can be helpful in designing a relational database. These diagrams are known as entity-relationship diagrams, ER diagrams or ERDs.
Techopedia Explains Entity-Relationship Model (ER Model)
The first step in information system design dictates that the requirements analysis models illustrate the type of data or information that needs to be collected. The data modeling method may be used to illustrate a specific interest area’s ontology. Like the relational model, abstract data is converted to a logical data model when the design of an information system is built on a database. Likewise, this is converted to a physical model when it is physically designed.
