Employing a data model permits the designer to present data visually. These models focus on representing...

Question:

Employing a data model permits the designer to present data visually. These models focus on representing the data in terms of a user’s viewpoint. Let’s say you are required to perform the diagramming process. What role does the entity-relationship (ER) diagram play in the design process? Also, what are the various symbols used in the process as well as the different types of information represented in the ER diagram?

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