HomeDiagramsER diagramER: Crossing Edges and Edge Labels

ER: Crossing Edges and Edge Labels

Four relationships where a dashed edge crosses a solid one (#2112). In the ASCII panel every crossing is drawn as a junction, each label sits on its own edge or beside its own stem, and no edge runs along an entity border.

er-crossing-edges-and-edge-labels.mmd
erDiagram
  AUTHOR ||--o{ BOOK : writes
  AUTHOR ||..o{ AWARD : receives-award
  PUBLISHER ||--o{ BOOK : prints
  PUBLISHER ||..o{ CATALOG : appears-in
Output
ER diagram, Zombie Mermaid AUTHOR (no attributes) BOOK (no attributes) AWARD (no attributes) PUBLISHER (no attributes) CATALOG (no attributes) writes receives-award prints appears-in

More ER diagram examples

ER diagram, Zombie Mermaid CUSTOMER (no attributes) ORDER (no attributes) places
ER: Basic Relationship
ER diagram, Zombie Mermaid CUSTOMER PK int id string name UK string email date created_at
ER: Entity with Attributes
ER diagram, Zombie Mermaid ORDER PK int id FK int customer_id UK string invoice_number decimal total date order_date string status
ER: Attribute Keys (PK, FK, UK)
ER diagram, Zombie Mermaid PERSON (no attributes) PASSPORT (no attributes) has
ER: Exactly One to Exactly One (||--||)
ER diagram, Zombie Mermaid CUSTOMER (no attributes) ORDER (no attributes) places
ER: Exactly One to Zero-or-Many
ER diagram, Zombie Mermaid SUPERVISOR (no attributes) EMPLOYEE (no attributes) manages
ER: Zero-or-One to One-or-Many