There is a widespread misconception that modeling implies the use of UML diagrams: it does not. At the Department of Social and Family Affairs (DSFA) in Ireland, whose new Child Benefit Administration ...

Figure 3 illustrates. Generally speaking, we can say that array types are covariant in Java. We’ll look at examples of covariance among generic types later in the article.

The OCL constraints in the current UML meta-models have never been tool checked, so they contain many errors. These were of no real consequence, particularly since there was a disconnect between the ...