Information Flows

An information item represents some pieces of information that can be exchanged between objects at a fairly high level of abstraction.

Figure 10-6 shows two equivalent notations for an information item.

Figure 10-6: Information item

An information flow is a dependency within which one or more information items circulate from their sources to their targets. The flow doesn't specify the nature of the information or the mechanisms by which the information is conveyed.

Figure 10-7 shows an example of an information flow.

Figure 10-7: Information flow