Hello everyone :)   During my project study end I found a problem more precisely in class diagram   Here's the problem I have:   an electronic component belongs to one and only one category.   each category has specific properties that are different from other classes   you can find a property in several categories   each component has specific values ​​for these properties   I work for several days and whenever there is a problem. following two proposals that I worked on it   someone had had advice to give me thank you in advance class1.png class2.png    More>>