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 invisible based on choosing a check box by user. Is it correct to have it on a sequence diagram? and how can I draw it?
Is my use case 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 following problem statement:
Problem Statement:
A library contains books and journals. The task is to develop a
computer system for borrowing books. In order to borrow a book
the borrower must be a member of the library. There is a limit on the
number of books that can be borrowed by each member of the library.
The library may have several copies of a given book.
It is possible to reserve a book.
Some books are for short term loans only. Other books may be
borrowed for 3 weeks. Users can extend the loans.
1. Draw a use case diagram for a library.
2. Give a use case description for two use cases:
• Borrow copy of book
• Extend loan
Diagram:
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 following problem statement:
How to Be a Software Engineer? [duplicate]
This question already has answers here: Why sacrificing good software engineering practices is typically the first choice for software development projects assuming “good enough” quality [duplicate] (6 answers) Closed 9 years ago. My problem is kind of weird so please bear with me. I have been working in a start up concerned basically with mobile […]
Are UML class diagrams adequate to design JavaScript systems?
Given that UML is oriented towards a more classic approach to object orientation, is it still usable in a reliable way to design JavaScript systems?
Should UML be used before or after a basic Program Design
UML Diagrams take time and even though they provide knowledge about program design, the design changes and so do requirements, and hence it becomes a chore to keep UML Diagrams in Sync with code. I am trying to figure out how should we use UML in an optimum way.
The Meaning of Unified in UML
UML and other related modelling languages are exists in most of the system engineering fields to represent the system, flow, relations in a structured way. UML also is one of the modelling language used in computer science like other industries to represent the systems in obeject oriented way by using different types of diagrams. Does ‘Unified’ UML has a special (or real) meaning here?
How show Attributes which appear In Many To Many association
As we know a many to many association are shown by two asterisks in both end of association. Now I have a association between two entities “Good” and “Invoice” so Good and Invoice have a many to many association but I want to show the “count of each good” in each invoice on class diagram.
What does the arrow mean in a Class Diagram?
I need help trying to understand what the meaning of the arrow in a UML Class Diagram is, more specifically in this Composite Diagram. What’s the difference between the simple line (from a class to another one) and the arrow (not the inheritance arrow, I refer to the black one)?
Is this usage of extend relationship in a use case diagram correct?
On this picture: