Architecting and designing > TOGAF > Building deliverables for the TOGAF Architecture Development Method > Building deliverables for Phase C: Information System Architectures > Building data architectures for TOGAF Phase C > Logical Data Model
  
Logical Data Model
System Architect offers two diagram types to model a logical Entity Relation (ER) diagram:
•Entity Relation diagram.
•IDEF1X diagram.
For more on this topic, see Components of an entity relation diagram.