Effect Correspondence Model
Effect Correspondence Diagrams (ECD) illustrate all the entities affected by a given event.
An Effect Correspondence Diagram
Effect Correspondence Diagram (ECD) Notations
Use a rounded rectangle to represent an entity.
Learn how to add and edit text on an entity.
When an effect forces the entity to take on multiple roles, encapsulate these roles inside a rectangle.
Mark entities with a small "o" to identify an effect that forces the entity to behave in one or more mutually exclusive ways.
Use an asterisk (*), to illustrate an entity that is affected multiple times.
If two entities are updated at the same time, link them with a double-headed arrow.