Er Model Diagram. In other words er diagrams help to explain the logical structure of databases. Entities attributes and relationships.
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Er diagram stands for entity relationship diagram also known as erd is a diagram that displays the relationship of entity sets stored in a database. Er diagrams are created based on three basic concepts. Entities attributes and relationships.
Let us now learn how the er model is represented by means of an er diagram.
Entities are represented by means of rectangles. Er diagrams are most often used to design or debug relational databases in the fields of software engineering business information systems education and research. Entities attributes and relationships. In software engineering an er model is commonly formed to represent things a business needs to remember in order to perform business processes consequently the er model becomes an abstract data model that defines a data or information structure which can be implemented in a database typically a relational database.
