Business Intelligence Dictionary: Entity Relationship (E/R) Diagrams | NSBI
It is important for developers that they get an overview of available data, relationships and architecture. This is where Entity Relationships (E/R) diagrams are introduced.
Entity Relationship (E/R) Diagrams | Definition
Data is grouped in rows and columns, then grouped in tables and views. Next step is to apply relationships between the tables. This is the foundation of relational database design. E/R Diagrams are there to help visualize the relationships between tables in a database.
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Entity Relationship (E/R) Diagrams | Example