1. What is an entity relationship diagram and what purpose does it serve? 2. What are the differences between a data flow diagram and an entity relationship diagram?

Running Head: ENTITY RELATIONSHIP DIAGRAM                    1
ENTITY RELATIONSHIP DIAGRAM                            2
ENTITY RELATIONSHIP DIAGRAM
Table of Contents
Question 1    3
Question 2    4
Data Flow Diagram (DFD)    4
Entity Relationship Diagram (ERD)    4
References    5
Question 1
Entity relationship diagram is a structural interpretation of a database design. It uses different signs and symbols to produce two important information of the major entities present within the system and the connection between the entities. As mentioned by Kamatkar, Kamble, Viloria, Hernandez-Fernandez and Cali (2018), the entity relationship diagram helps in tuning the database activities and optimising the queries of the users. It can be termed as the visual representation of the relationship between different sets of data.
The diagram represents an...