What do we call this diagram as?Do we call it as E-R diagram?

Thanks a lot for your he开发者_运维问答lp. I really need to make it clear :(

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Yes, this is an Entity Relationship Diagram, using Chen's notation.

The inclusion of field names muddies this a bit - an ERD shouldn't really express this information AFAIK.

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I think it's a UML diagram