Entity Relationship Diagram is a snapshot of data structure. Such a database design diagram is used to show the entities present in a database as well as the relationship between tables in that database, typically used for modeling the organization of data within databases or information systems. The ERD thereby acts like the blueprint for the database and it allows the creation of an accurate design that reflects the needs of the project. With the best ER diagram tool, ERD can be created quickly and effortlessly.
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