Is there a type of UML Diagram to show for instance a Class with its attributes and if for example a service is called show the interaction and the sequence of the service that is going to be executed.
Let's say:
I have a system with its BackEnd and FrontEnd
Taking into consideration that in the diagram the Class of the screen is shown.
If some button is pressed, I would like also to show the sequence of the service is called (the actions that happen behind).
I know that this could be a sequence Diagram but I want to show also some classes.
Thank you
You can create both a class diagram and a sequence diagram. Then you can add the class diagram as diagram frame to the sequence diagram.
Related
I have a question regarding UML sequence diagram. I have actor system, where I have many objects (actors) of the same class communicating with each other. The number of actors depends on the problem, but it is too large to draw them all. I have also other parts of a system (other actors) and now I'm drawing UML sequence diagram showing communication between actors with a time perspective. My question is how to show communication between actors of the same class?
I have found something like this:
But it looks like calling method within object and not other object of the same class (or maybe I'm wrong?). I also thought about showing two objects on diagram, but then I would have to double number of arrows, becouse each communication from other part of system would have to be connected with both. Do you know some third solution how to show this properly?
You could divide your scenario over multiple sequence diagrams.
One diagram has multiple lifelines for the same class, for example i1 : MyClass and i2 : MyClass and shows the interaction between the instances. If another part of the system calls method bar of all instances, then you could draw those calls, but what happens inside that method is modeled in a different sequence diagram.
For example, here is the first diagram:
and here is the second diagram:
I've been struggling to understand the transition from a UML Class Design Diagram to a UML Sequence Diagram for a school assignment. My design class diagram contains a central DataManager class that connects the use case control classes to the data table classes (ie. user, product, employee), however, do I need to include the data table classes in my use cases' sequence diagrams?
Design Class Diagram
My Sequence Diagram Attempt
So, in the end, I didn't phrase my question as I wanted to. I was asking if communications between the database tables and the data manager class should also appear in the sequence diagram. The answer is, they should. The whole point of having a sequence diagram is to guide a developer in the "development" of a class. For my diagrams, all messages I used for this communication had a standard sql() operation for each message.
i'm php developer using MVC architecture that i'm new to UML
i know use-case , class , object , activity, sequence diagrams but i don't know for modeling a application where i should start.
i know use-case and class diagrams are structural diagrams and activity and sequence are behavior diagrams
but my questions are:
1. for modeling a app when i should use use-case diagram and when i should use class diagram?
2. does class diagram has abstract concept? because when i'm developing web app i have some controller and model or view also several classes that i use for different purpose (like insert data to database - validate form inputs and so on) but they don't look like to examples of class diagram that i'v seen until now so my question is class diagram is used for show concept of our system and it doesn't need to generate real class code form it ?
for example modeling a ticket reservation that may have some classes like this:
but we don't write class codes like this and it can be different in programming but for view the concept we are using class diagrams . is it true ?
Use-case diagram is usually used for representing the business of the project, indicate who(actor) are going to utilize the system and what services(cases) does program provide?
The class-diagram is used for specifying the whole system structure, but there no code and exact behavior will be provided by the class, generally developers don't specify the exact behavior with each module in-detail.
for example, consider a simple login module. in use-case diagram, we just mention that user logins into the system.
In class diagram we specify the possible base classes are needed, in other word we apply the architecture (we are planning) basis.
In sequence diagram we focus more on what is going on each method(while this is not necessary).
In fact UMl is used for representing the system as abstract, not the exact(in-detail) functionality.
for example I pass the above class-diagram to a developer, and tell him about the detail login process as a separated document.
I was wondering if anyone could explain to me how to represent a loop from UML sequence diagram in a Class Diagram.
Here's the Sequence Diagram:
and here's the Class Diagram I made from the Sequence Diagram
You don't.
Class diagrams are not about code execution; they are about the structure of your classes. In other words, your sequence diagram has a time component that shows the reader what happens during the execution. Class diagrams, on the other hand, are supposed to show class relationships (i.e. which class is associated/uses/derives from another class).
UML diagram taxonomy is divided into Behavoural and Structural diagrams. A class diagram is structural, you would need a behavioural diagram to describe loop semantics.
UML 2.x sequence diagrams have explicit notation for loops, while loop semantics may also be expressed in activity or state-machine diagrams.
In your sequence diagram, the loop is inside the :microndas::iniciar() method/message, and is therefore part of the description of that rather than the class diagram. You would attach a behavioural diagram to the :microndas class to describe this behaviour is necessary, though your existing sequence diagram may already suffice.
UML is about expressing different "views" or "aspects" of a system, It is wrong thinking to try to express all that is in one diagram type in another - if that were possible we'd only need one diagram type, and I do not want to go back to designing everything with a flow-chart; for one thing the stationary shop no longer sells those stencils!
I have following questions regarding to UML diagrams:
1) I have one Game application in C# consisting of 3 games namely crosswords,sudocu n scribble
& I have only 3 classes belonging to each game then:
In the class diagram will only those 3 classes come? But they don't have any associativity among them
And The states in the state diagram will be pause,running,stopped respectively? or do I need to specify the states according to game
2)I have an application in java which allows user to do one thing at a time by selecting a option from the options(I have used JTabbedPane) available then:
Do I need to draw an activity diagram for each of those options available?
You need to create a state or activity diagram at the root of each class in the class diagram. You will be able to model this extension.
(source: forum-omondo.com)