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Entity relationship diagrams
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What an ERD shows

What an ERD shows

ERD notation summary showing an entity rectangle plus one-to-one, one-to-many, and many-to-many relationships with crow's feet labelled

Entity relationship diagrams Lesson

  1. A Level
  2. /Computer Science
  3. /Entity relationship diagrams

Step-by-step lessons on OCR A Level Computer Science Entity relationship diagrams, covering Entity relationship diagrams. Each one builds up to exam-style questions.

Lessons