Database Management System20785 marksER diagram purpose and symbols
What is an E-R Diagram? Explain various symbols used in the E-R Diagram.
What is an E-R Diagram? Explain various symbols used in the E-R Diagram.[5]
An Entity-Relationship (E-R) Diagram is a graphical/pictorial representation of the logical structure of a database. It shows the entities (objects) in a system, the attributes of those entities, and the relationships between them. It was introduced by Peter Chen in 1976 and is widely used as a t...