Question

define different
Symbols of Er model​

Answer 1

Answer:

ER- Diagram is a visual representation of data that describe how data is related to each other. Rectangles: This symbol represent entity types. Ellipses : Symbol represent attributes. Diamonds: This symbol represents relationship types.

ER Diagram Symbols and Notations. There are three basic elements in an ER Diagram: entity, attribute, relationship. There are more elements which are based on the main elements. They are weak entity, multi valued attribute, derived attribute, weak relationship, and recursive relationship.

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