The Unified Modeling Language is the industry standard for modeling software-intensive systems.

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6
votes
6answers
9k views

UML: Going from Use Case to Class Diagram

In simple steps how can one make the transition from a Use Case diagram to a Class diagram?
5
votes
1answer
1k views

Sequence Diagrams

I recently read the book 'UML Distilled' and found the sequence diagrams very useful. My question is that can we show 'data flow' as well on a sequence diagram? This is my first time on sequence ...
3
votes
2answers
422 views

Question between aggregations, compositions, references (arrow) and simple link (nothing) relations within UML2?

I have some questions regarding relations between aggregations, compositions, references (arrow) and simple link (nothing) relations within UML2 ? If A -> B -> C each have composition relationship. ...
1
vote
4answers
1k views

Can an aggregate root hold references of members of another aggregate root?

I know that outside of aggregates I can't change anything inside an aggregate without passing by his root. That said I would like to know if an aggregate root can hold references of members (objects ...
6
votes
4answers
349 views

What modelling technique do you use for your continuous design? [closed]

Together with my teammates, I'm trying to self-learn XP and apply its principles. We're successfully working in TDD and happily refactoring our code and design. However we're having problems with the ...
8
votes
6answers
2k views

On-the-fly graphical representation of code [closed]

I know about Omondo's plugin for live code-UML synchronization in Eclipse, but I was wondering if there was any other tool/IDE/IDE-extension that has some form of live graphical code representaiton ...
3
votes
2answers
695 views

can an object in a sequence diagram send a message call to the user?

I need to make a sequence diagram and I'm not sure how to represent user input. Is it correct to have a message be sent from an object to the user asking for user input or should all objects be ...
7
votes
3answers
423 views

Should I create Use Cases or create Class Diagrams first?

So I'm designing an Education Management System and I'm wondering if I should be creating the Use Cases or the Class Diagrams first?
5
votes
2answers
1k views

How to learn UML for a design usage?

10 years ago at college I had some UML lectures. From these I remember and use only some basic part of class and sequence diagrams and how our teacher was trying to convince us that in the future, ...
1
vote
7answers
531 views

Would you use UML if it kept stakeholders from requesting changes frequently? [closed]

As much as programmers hate to document their code/system and draw UML (especially, Sequencing, Activity and State machine diagrams) or other diagramming notation, would you agree to do it if it kept ...
9
votes
12answers
2k views

Should you Create Class Diagrams before or after implementation?

The way I see it if you create one before you get the advantage of: Planning ahead Overview of the project but you lose: Time (doing work you'll probably end up repeating when writing code) On ...
5
votes
3answers
446 views

Should a developer adhere to the class diagrams produced during system design?

The class diagram is modeled on the system requirements, and it is important to create solutions based on those requirements. If I have said class diagram should I strictly adhere to it? What about ...
30
votes
12answers
1k views

How often do you use Formal UML?

I used ad-hoc MUML (made-up modeling language) to design and explain system fairly frequently. It looks similar to UML and tends to be pretty well understood. However, I've had a professor or two ...