Snapshots or Instance Diagrams
Snapshots illustrate the state of a system at a particular moment in time.
A snapshot diagram
Snapshot Notations
Objects
Objects are distinct entities in a system. They have identity, behavior, and state.
Learn how to edit text on objects.
Object
Object with attributes
Created Object
Links
On a snapshot diagram, links represent some attributes the object has at that given time. Links can be listed
as attributes on the object symbol, or if one object is an attribute of another, you can draw a line between the
two.
Learn how to connect two objects.
Created link
Deleted Link
Link
Pre- and Postcondition Snapshots
To illustrate how actions affect the states of objects, Catalysis combines pre- and postcondition snapshots.
A pre- and postcondition snapshot diagram