ERD

2025. 7. 25. 22:51·Computer Science/Database

ERD (Entity Relationship Diagram)

An ERD serves as the fundamental blueprint when building a database,

defining the relationships between relations (tables).

  • ERDs are created based on system requirements, and the database is built from this design.
  • Even after the database is built, ERDs can serve as a reference for debugging or redesigning business processes.

However, while ERDs are useful for representing data in a relational structure,

they have limitations in fully representing unstructured data.


Example of an ERD

 

 

 

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