UML diagrams of cooperation (collaboration) (collaboration diagram) (purpose, components, rules of construction).

The syntax for the property representation is:

Name: Type = Value

The language provides the following standard stereotypes of visibility:

· “Global”

· "Local"

· “Parameter”

· “Self”

A message is a specification for the transfer of information between objects in anticipation of the required activity.

The following syntax is used for writing messages:

Return Value: = MessageName (Arguments),

Fig.8.1 Synchronous message flow

Fig.8.2 Asynchronous message flow

Iteration represents a repeating sequence of messages.

Fig.8.3 Iterative and forked message flows

For the collaboration diagram, the following actions are performed:

1) the objects involved in the interaction are displayed;

2) the connections connecting these objects are drawn;

3) communications are marked with messages that send and receive selected objects. The result is a clear visual representation of the control flow.

Fig.8.4 Asynchronous message flow