What is an Entity Relationship Diagram?
An Entity Relationship Diagram (ERD) is a graphical representation that shows how entities, such as people, objects, or concepts, relate to each other within a system.
ERDs are commonly used in database design to visualize the relationships between entities and their attributes.
They help in understanding the logical structure of databases by showing entities’ connections and relationships using symbols like rectangles, diamonds, ovals, and connecting lines.
ERDs are essential for designing or debugging relational databases in software engineering, business information systems, education, and research.
How to Draw Entity Relationship Diagrams (ERDs)
Entity Relationship Diagrams serve as valuable tools for designing complex systems and their relationships.
This article will go through the step-by-step process of designing an ER diagram and defining how entities, attributes, and relationships are defined. Entity relationship diagrams are important in database design and require a clear structure for all data.