Persons, objects, or concepts from the real world, which we model as objects in the IT system, have "lives". Actually, they have two lives; the original in the real world has a life, and our image, the object, has a life as well. Though these two lives are related, they do not necessarily follow the same course. Usually, a life starts at birth, creation, or generation and ends with death, deletion, or destruction. In between, life follows a more or less ordered course, as illustrated in Figure 4.43:
Figure 4.43 The life of a plane
To illustrate what we mentioned before we would like to take a closer look at the life of a plane. The plane that we would like to look at is an Airbus A330-223 of Swiss International Airlines with the registration number HB-IQI.
The birth of the Airbus A330-223 (of the original) occurs, depending on the perspective, at the start of construction or at the first flight.
The birth of the object of the Airbus A330-223...