Supporting ER diagrams

[RovingSea]

The ER diagram case currently displayed on the official website, in my opinion, is UML, and it is not a true ER diagram.

For example, I hope to be able to complete the drawing of the following image through syntax:

It seems that the syntax of the er diagram displayed on the official website cannot be completed.

Looking forward to a reply and suggestions.

[The-Lum]

FYI, see also new Chen notation here:

• 945

• 1718

[RovingSea]

FYI, see also new Chen notation here:

• Chen Notation for ER-diagrams #945
• Implement Chen Notation for ER-diagrams #1718

This information is very useful to me, thanks.