Er Schema. An entity relationship model er space model describes the structure of a database with the help of a diagram which is known as the entity relationship diagram er diagram. So that an er diagram can express the overall logical structure of a database graphically.
Er diagrams are most often used to design or debug relational databases in the fields of software engineering business information systems education and research. Remember the three features of en. Entities which are represented by rectangles.
An entity relationship model er space model describes the structure of a database with the help of a diagram which is known as the entity relationship diagram er diagram.
Er diagrams are created based on three basic concepts. There are five main components of an erd. Er diagrams are created based on three basic concepts. Entity relationship diagrams erds help to visualize relationships between entities more directly and are widely used in database design software engineering business information systems education and research.
