Authors → Books ER
Tiny example showing every ERD primitive — entities, primary keys, fields with types, a labelled relation.
Rendering…
Make it your own.
[Person]
*name
height
weight
`birth date`
+birth_place_id
[`Birth Place`]
*id
`birth city`
'birth state'
"birth country"
Person *--1 `Birth Place` {label: "born in"}