ER Diagram · ERDUniversity schema (academic ERD) — ER Diagram
Classic textbook schema with Student / Course / Enrollment associative entity and labelled relationships — the canonical Elmasri & Navathe ch.3 example.
Type Entity-Relationship Diagram (ERD)Standard Chen 1976 / Everest 1976 (crow's foot)Engine schematex-erdUpdated 5/27/2026