According to Li and Chen (2009), ERD is a diagram that shows how different things in a database relate to each other.These terms are related to ERD: Entities are the things being modeled, like customers or products. Attributes are the characteristics of an entity, like its name or size. Cardinalities show how many of one thing are related to another, like one-to-many or many-to-many. Relationships show how entities are connected, and can be one-to-one, one-to-many, or many-to-many. ERDs are helpful for designing and building a database that meets the needs of a business or organization. References: Li, Q. and Chen, Y.L., 2009. Entity-relationship diagram. In Modeling and analysis of enterprise and information systems (pp. 125-139). Springer, Berlin, Heidelberg.


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