Entity Relationship Diagrams - A Level Computer Science

Explanation of ERDs and associative entities.

[muhie]

Thank you! Really Helpful, this was tought so badly by my teacher!

[maryamm_.k]

you are an actual life saver - ur videos are so goodddd

[shivanir]

why isnt owner - vehicle a many to many relationship? Many owners can own many vehicles

[finjosherpa]

helpful. thanks /. your voice sound like Conor mcgregor's

[yashayakhnis]

You have an error beginning at 5:48, through to the end of the video; and this is the second time seeing this exact error in a video today. It's a one-to-many relationship between student and register, not the other way around. A one to many relationship between register and student in impossible. Also, register, being an entity, must be singular, not plural. One register can have only one student, but one student can have many registers. You said one register can have many students; that is false. A register is a pairing of one student with one course section.