![]() UML 2 Tutorial - Sequence Diagram Sequence DiagramsĪ sequence diagram is a form of interaction diagram which shows objects as lifelines running down the page, with their interactions over time represented as messages drawn as arrows from the source lifeline to the target lifeline. ![]() Sequence diagrams are good at showing which objects communicate with which other objects and what messages trigger those communications. Sequence diagrams are not intended for showing complex procedural logic.Ī lifeline represents an individual participant in a sequence diagram. If its name is "self", that indicates that the lifeline represents the classifier which owns the sequence diagram.Ī lifeline will usually have a rectangle containing its object name. Sometimes a sequence diagram will have a lifeline with an actor element symbol at its head. This will usually be the case if the sequence diagram is owned by a use case. Boundary, control and entity elements from robustness diagrams can also own lifelines. Messages can be complete, lost or found synchronous or asynchronous call or signal. Bueno ahora que ya saben mejor sobre el temita este, acá les dejo un modelador UML, entra a la pagina y se lo descargan. In the following diagram, the first message is a synchronous message (denoted by the solid arrowhead) complete with an implicit return message the second message is asynchronous (denoted by line arrowhead), and the third is the asynchronous return message (denoted by the dashed line).Ī thin rectangle running down the lifeline denotes the execution occurrence, or activation of a focus of control. Buenas gente, ahora les traigo algunos conceptos sobre UML, también sobre casos de uso, diagrama de clases y se secuencia, que son básicos para el análisis de sistemas. In the previous diagram, there are three execution occurrences. Just Select Association, Click on Admin, and Drag it to the Use Case which you need to connect.Īs I have explained the steps to draw a Use Case Diagram for Online Shopping in Star UML, by adding the Use Case Subject, Actors, Use Cases, And connecting the Actors with the Use Cases.The first is the source object sending two messages and receiving two replies the second is the target object receiving a synchronous message and returning a reply and the third is the target object receiving an asynchronous message and returning a reply.Ī self message can represent a recursive call of an operation, or one method calling another method belonging to the same object. User Will Register, View Item, Make Order, Make Payments, and change Password.Admin will Add Item, Add Category, Manage Item, Manage Order, Manage Registration.Admin will manage login as well as user will Use it.✦ Connect Admin and User with the Use Cases with Association: Last Use Case is Change Password, as the user can go to His/Her Account and Change its password if they want. The ninth Use Case is when the User Makes an Order, then He/She will Make Payments. After Viewing the Item, there comes the Eight Use Case which is Make Order. Seventh Use Case, View Item will be connected with User, as He/She will view the item and then proceed further to purchase. The Sixth Use Case is, Registration is part of a User because without signing up for an Online Shopping System User cannot do other activities. ![]() The fifth Use Case is Manage Order which is also managed by an Admin. Copied startuml Alice -> Bob: Authentication Request Bob ->. The fourth Use Case is Manage Item, as adding items is the responsibility of an Admin so Managing Item is also part of Admin. Note that this is only true for sequence diagrams, rules are different for the other diagrams. The third Use Case is Add Category which will also be managed by the Admin. The second Use Case is to Add Itemthat will be done by the Admin that needs to be taken care of. So, Select Use Case from the left and add it inside the Use Case Subject. As User will First Login and then He/She can proceed to order something. The first use case that is important for an Online Shopping System is Login. ![]() You can also change the Actors Line Color by Right Click -> Line Color. GitBook Diagram Editor Scroll Diagram You can scroll diagram by typical mouse wheel or touch pad scroll gestures. On the left side, pick the Actor Use case and just click wherever you want to add and change its name. So For Online Shopping, There are basically two Actors: Just click on it and Then Make it on the White Side and Give it the name Online Shopping System. The first step to draw a Use Case Diagram for Online Shopping is to Add a Use Case Subject From the left. Step 3: Draw a Use Case Diagram ✦ Add Use Case Subject: You can see on the left side all the use cases of the Use Case Diagram is shown and a whiteboard on the right side. First select an element where a new Class Diagram to be contained as a child. Now you need to add a Diagram from Models -> Add Diagram -> Use Case Diagram. After Downloading, open Star UML and you can see a Blank View. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |