UML Diagrams.....

                           UML Diagrams.

UML stands for Unified Modeling Language which is used to display an application structures, behavior and even business forms in programming designing. This is a rich language that can be used to design and documenting a system in an object-oriented manner. This is not a programming language but a modeling language. We create this much before coding or the execution of our program. UML diagrams are the “blue prints” of our source code.

There are 14 UML diagram types.

1.    Class Diagram

2.   Component Diagram

3.   Deployment Diagram

4.   Object Diagram

5.   Package Diagram

6.   Profile Diagram

7.   Composite Structure Diagram

8.   Use Case Diagram

9.   Activity Diagram

                        10. State Machine Diagram

                        11. Sequence Diagram

                        12. Communication Diagram

                        13. Interaction Overview Diagram

                        14. Timing Diagram

All those types of diagrams can be divided into two main categories. They are structure diagrams and behavioral diagrams. 

Structure diagrams 

Structure diagrams will show how the system should be modeled. As well as this will present different objects in the system in a more technical manner.

Structure Diagrams are;

1.    Composite Structure Diagram
2.   Deployment Diagram
3.   Package Diagram
4.   Profile Diagram
5.   Class Diagram
6.   Object Diagram
7.   Component Diagram

Behavioral diagrams

Behavioral diagrams shows what should happen in a system. This will describe how the objects interact with each other to create a functioning system.

Behavioral diagrams are;

       1.State machine Diagrams
2.   Communication Diagrams
3.   Use Case Diagrams
4.   Activity Diagram
5.   Sequence Diagrams
6.   Timing Diagrams
7.   Interaction Overview Diagrams

Use Case Diagrams

Use cases describe, what are the interactions that happen between the Actors and the System of respective scenarios. The actor can be a human or other external system.

Here is the list of notations supported in a UML use case diagrams;

                  

   

Examples for a use case diagram:

Here is an example for a Car Park System which I have design for a specific scenario.

This is a Use Case for an E-Banking Application.