Question
Which of the following graphical models represents the
relationships between entity sets in a database?Solution
ER Diagram Ā stands for Entity Relationship Diagram, also known as ERD. It is a diagram that displays the relationship of entity sets stored in a database. ER diagrams help to explain the logical structure of databases.
ā¢ The model helps to systematically analyze data requirements to produce a well-designed database.
ā¢ ER diagrams are created based on three basic concepts: entities, attributes and relationships.
ā¢ The purpose of ER Diagram is to represent the entity framework infrastructure.
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