A database relationship diagram is a graphical representation of the entities in a relational database and the attributes of those entities and their relationships. The Database relationship diagram is used to create or view graphical representations of relational database system schemas that contain a wide range of database objects. Diagrams can be drawn at either a logical or physical level. An entity-relationship diagram depicts how these entities are related to one another. It could be referred to as the blueprint that underpins your business architecture because it depicts the relationships between various data sets (entities). A database comprises multiple components such as tables, indexes, stored procedures, etc.
