Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [sequence-diagram]

The tag has no usage guidance.

0
votes
2answers
149 views

Is it possible to represent an if statement in a system sequence diagram?

I'd like to highlight that this questions is about a System Sequence Diagram (SSD) and not a simple Sequence Diagram and of course any help would be appreciated! I'm reading Graig Larman's book ...
-5
votes
1answer
75 views

How this diagram can be improved [closed]

I'm looking for failures in this "token based login" design, besides the UML "syntax" errors. Theoretically speaking, it will do the trick when implemented on an small project. If true, sorry about ...
1
vote
1answer
158 views

Trying to understand Sequence Diagram

I am trying to understand two sequence diagrams that I have found in the SE course at university of Washington. Can you confirm if my understanding is correct ? Diagram 1: According to my ...
2
votes
0answers
117 views

Displaying entity framework calls in Sequence Diagram

I have a controller action which gets all the Plants by location from the database puts it inside a view model and passes it to the view. public ActionResult index() { List<Plant> plants = ...
0
votes
1answer
530 views

Microservice dependency diagram

What is the best way to capture dependency between microservices. I want to create a diagram which show the interfaces and the microservices using the interfaces. The aim is to easily do a impact ...
1
vote
3answers
407 views

How to display a C# using() statement in sequence diagram

Is there a rule/guideline about how to display a C# using() statement in UML sequence diagrams? I'm right now in the last months of my apprenticeship. And to prove, that I'm able to develop software ...
1
vote
1answer
214 views

Representing handlers on UML diagrams

This question is a follow-up to Representing multiple actions for sequence of objects on activity diagram, but isn't strictly related. The question boils down to: How to present in UML patterns that ...
2
votes
1answer
3k views

Shall the Database in a sequence diagram be represented as actor or boundary?

I'm designing a system made of a web application and database. I use the <<Entity>> - <<Control>> - <<Boundary>> stereotypes in my UML diagram. In the following ...
1
vote
1answer
546 views

What is a good diagrammatic way to represent async event communication between two systems?

What is a good diagrammatic way to represent asynchronous event communication between two systems (the pub sub model)? I am not looking for tools but more of a representation. Is it a sequence diagram,...
2
votes
2answers
1k views

Sequence diagram for Abstract and Derived class

I've a bunch of classes where one is Abstract class. I draw few derived class from that Abstract base class. For example, class IBase{ public: *register(): bool* *update(): bool* }; class Derived:...
2
votes
4answers
511 views

Is actor a own class

I have this sequence diagram and want to transform it into a class diagram. But I don't know if the actor (Customer) is in this case a own class or not. Normally the actor isn't a own class, but in ...
3
votes
2answers
870 views

Long chained method calls contained within an if statement shown on a sequence diagram

Just wondering if there is a good way to do this? Currently i'm performing the method calls as if they were happening prior to the conditional block, then comparing what would be the result in "[...
5
votes
3answers
1k views

Software architecture | App with API back-end

I have been searching the net for an answer, but I was not able to find a similair question nor answer. So here I am. I am developing an app where a user can take a picture of a car and they will get ...
1
vote
1answer
1k views

How do I represent a recursive process down a tree in a sequence diagramm?

I'm working on a sequence diagram for a layered system that has a tree hierarchy. Now I have a process that works itself recursively down the tree. Meaning calling the same function on a child object. ...
3
votes
2answers
656 views

A function as a parameter in UML

I was wondering what is the best way to represent a function that is passed as a parameter in UML. Because I want to create a sequence diagram of my current networking code in my Swift project and ...
3
votes
1answer
621 views

UML Sequence Diagram

I am trying to draw a sequence diagram for "post a job" use case. The description is as follow: Basic flow: This use case begins when the employer selects the “Post a new Job” option. System ...
6
votes
3answers
7k views

UML sequence diagram - how to represent async response

If A sends an async message to B like for example, to load async images to UI from the web. Where should the response message go? Should it be slant as well or direct? And where would the activation ...
10
votes
1answer
4k views

Sequence Diagram: Are actors objects?

The most likely answer is no, but I've come with this doubt. Can an actor act as a class? I know actors trigger events and can have prompts, but if there's a class modeling an actor (such as an user ...
2
votes
1answer
2k views

How to show multiple exit conditions in a system sequence diagram loop frame

How are multiple exit conditions in a system sequence diagram loop frame indicated? And how would the alternative event flow based on how the system exited the loop be shown? For example a login loop ...
2
votes
2answers
293 views

Is it okay to simplify a Sequence Diagram (grouping lifelines)?

Is it okay to group several Components into a single lifeline for simplicity? For example, let's say I have a UML Component Diagram, and it's a layered architecture. There are 26 components, one on ...
2
votes
2answers
263 views

Sequence diagram - unknown receiver of a message

Our lecture provides us students a quiz to revise the material learnt of the last study session. The answer to the following questions was stated as "Yes": "The receiver of a message does not have ...
1
vote
0answers
240 views

Shared pointers across threads in UML for class and sequence diagrams

How does one represent shared pointers across threads in UML for class diagrams and sequence diagrams? I especially want to document the ownership of the memory even though it's accessibility (a ...
4
votes
1answer
3k views

Does a message in a UML sequence diagram have parameters or arguments? [duplicate]

I recently took an exam for the introductory course on Computer Science. One question was about sequence diagrams (very simple example, boiled down to its essentials): The Bank object sends a ...
2
votes
1answer
863 views

Is there a way to show an if statement in a UML Sequence Diagram?

I went on an interview last year and was shown a sequence diagram and was asked to describe the the sequence. There were 2 things in the diagram I had never seen before. I asked what one of them was ...
4
votes
2answers
2k views

How to show retry in sequence diagram

I am drawing sequence diagram for large integration project where one system will initiate the REST call to another system and there is a proxy in middle which will pass through the request like A->...
3
votes
3answers
930 views

What is the connection between messages in sequence diagrams and method calls?

Since sequence diagrams depict messages between objects in a system, the messages have to be representing method calls. My question is if I have two objects in the diagram lifeline A --- doSomething(...
1
vote
0answers
3k views

Var assignment in sequence diagram

I am trying to represent the function below (PHP function/Symfony2) as a sequence diagram using UML 2.0 and Visual Paradigm: private function getVeevaHcpSync($request, $action, $case) { ...
2
votes
1answer
3k views

Should a list or array of objects be represented as a lifeline in sequence diagram?

I have the following sequence diagram to add a student to a list of students. the implementation could be like List<Student> Students = new List<Student>(); Students.Add(aStudent); I ...
7
votes
3answers
11k views

UML: Queue processor in a sequence diagram

Which is the appropriate way of representing a queue processor in a UML sequence diagram? I want to represent in the same diagram two systems that are loosely coupled through a queue. The first ...
2
votes
3answers
1k views

Sequence diagrams and the Implementation

In the design phase we create UML Sequence diagrams (in OOD). My understanding is that after creating an Use Case diagram if we need to show further information in terms of time sequence of events of ...
2
votes
2answers
1k views

How deep is enough to represent an algorithm in UML sequence diagram?

I have three simple classes. LoginController, UsersCatalog and User. UsersCatalog has an array of User. I have to represent a simple process of login. LoginController has a method login(username, ...
2
votes
2answers
693 views

How to handle long method names in sequence diagram?

I have a C# application that is developed with VS 2010 pro. The ultimate version would have a sequence diagram feature. Since I will "create" my sequence diagram manually, how do I deal with quite ...
0
votes
1answer
250 views

Compatibility between Class Diagram and Sequence Diagram

Do the message being passed between objects in Sequence Diagram match with the methods in Class Diagram?
3
votes
1answer
1k views

Should JavaScript and PHP objects be treated as different objects in an interaction diagram?

I'm drawing a communication diagram for an application where you can buy books. I'm using domain-driven design and have a 'shop' object, a 'cart' object, and a 'book' object. My first communication ...
1
vote
1answer
362 views

How to depict Import a file action in the Sequence diagram

Everyone says sequence diagrams are so easy but I just cannot figure this out. Basically user clicks on an 'Import from temp folder' button, the program opens a window with a list populated with ...
7
votes
1answer
6k views

What UML diagram should I use to show a platform's architecture?

I have been learning UML and have a basic understanding now, but I keep seeing these sort of high level architecture diagrams. Here's one from Microsoft: Source: A bad picture is worth a thousand ...
2
votes
1answer
2k views

Is my sequence diagram correct?

NOTE: I am self studying UML so I have nobody to verify my diagrams and hence I am posting here, so please bear with me. This is the problem I got from some PDF available on Google that simply had the ...
1
vote
1answer
2k views

Showing user and userinterface interaction on a sequence diagram

I need to draw a sequence diagram and I am not sure exactly if it is correct to show interaction between user and user interface in this diagram. For example I want to make a panel visible or ...
1
vote
3answers
20k views

How to visualize timer functionality in sequence diagram?

I am developing software for communication with external device through serial port. To better understand the new functionality I am trying to display it in sequence diagram. Flow of events is as ...
-2
votes
1answer
2k views

Sequence diagram should consist of View objects, DB objects, etc.?

What is the correct usage of UML sequence diagrams? Should they contain objects of View classes or DB classes? Or should they modeled in a more generalized fashion? Or is this completely arbitrary?
5
votes
2answers
635 views

Should Sequence Diagrams be Specific or Abstract?

I'm creating a sequence diagram for a simple program I'm working on for work. The diagram I'm currently working on is very high level - it defines the interface with lots of alt paths, but does not ...
4
votes
4answers
3k views

Web pages in UML sequence diagrams?

In my current project, we have an ongoing discussion about whether or not it's a good idea to include an artifact representing a web page in an UML sequence diagram for a web application, making ...
11
votes
3answers
53k views

How to include conditions in UML sequence diagrams?

I like to draw a UML sequence diagram to display the sequence of actions and interactions of different parts of my system (I think they called actors). However, I need to include if then else ...
3
votes
2answers
2k 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 ...