This Library ER Diagram is based on the number of entities. The second critical step is to understand the relationships between the entities. When looking for an ER diagram, creators usually consider how many entities they will work with. These arrow symbols are important to remember because they aid in retaining the type of relationship between the entities. When creating a library management system, these relationships are required to determine their placement in the database. The ER diagram, as previously discussed, aids in the breakdown of the database. This enables users to make changes to their databases, update them, and re-evaluate them as needed.
