How to indicate that a class might implement an interface?

Say I have a class User and an interface Administrator. Some users are administrator and can thus implement the interface. Most aren’t, however, so it’s false to say that “User implements Administrator”.

How to draw a class diagram where a class contains either 6 other classes or mupltie different

I know the basics but do not how to model this (it is an exercise with no solution provided):

How to draw a class diagram where a class contains either 6 other classes or mupltie different

I know the basics but do not how to model this (it is an exercise with no solution provided):

Is it appropriate to include a “select all” function in a Class Diagram?

Background Working towards my final project at University, team project and we’re stuck with a disagreement on a point in our Class Diagram. We have a class, called “Road”. In here with have some attributes like “ID”, “Name”, etc. This class also has functions like getName(ID): string Question Should we include a getRoads() function within […]

Help me clarify the cardinality for some concepts for a model

So I have a security model and am having problem with deciding the cardinality. This is what I have now:

Class diagrams – do aggregated/composed classes automatically see each other?

Let’s say that in the game, a player has a pet:

Class diagrams – do aggregated/composed classes automatically see each other?

Let’s say that in the game, a player has a pet:

Class diagrams – do aggregated/composed classes automatically see each other?

Let’s say that in the game, a player has a pet:

Class diagrams – do aggregated/composed classes automatically see each other?

Let’s say that in the game, a player has a pet:

Class diagrams – do aggregated/composed classes automatically see each other?

Let’s say that in the game, a player has a pet: