can somebody explain me about UML diagrams?

Answer 1

Please find the details from

http://uml.tutorials.trireme.com/

http://www.uml.org/

http://www.sparxsystems.com.au/UML_Tutorial.htm

http://bdn.borland.com/article/0,1410,31863,00.html

http://umlcenter.visual-paradigm.com/

http://www.visualcase.com/tutorials/uml-tutorial.htm

Have a nice day

Answer 2

UML(Unified Modeling Language) is widely used method of visualizing and documenting software system design. UML was created by Grady Booch,Ivar Jacobson and James Rumbaugh in the early 1990s and soon become IT idustry standard. UML uses O-O design concepts, but it is independent of any specific programming languageand is used to describe bussiness processes and requiremets generally.

UML provides various graphical tools and techniques ,such as use case diagrams and sequence diagrams.During requirements of modeling ,a systmes analyst can utilize such tools to represent the IS from user's point of view.

For more detail about this pls visit

==>www.scsite.com
=>click on chapter 3 & click on UML link
=>chapter 5 & click on Objects link for more examples

Answer 3

Unified Modelling Language (UML) is an Object Management Group (OMG) standard for modelling software artifacts. Using UML, developers and architects can make a blueprint of a project, much like ERD diagrams are used for relational design. See www.rational.com/uml/ for more details. UML diagrams can be constructed with JDeveloper

Each UML diagram is designed to let developers and customers view a software system from a different perspective and in varying degrees of abstraction. UML diagrams commonly created in visual modeling tools include:1

Use Case Diagram displays the relationship among actors and use cases.1
Class Diagram models class structure and contents using design elements such as classes, packages and objects. It also displays relationships such as containment, inheritance, associations and others. 1

Interaction Diagrams

Sequence Diagram displays the time sequence of the objects participating in the interaction. This consists of the vertical dimension (time) and horizontal dimension (different objects).1
Collaboration Diagram displays an interaction organized around the objects and their links to one another. Numbers are used to show the sequence of messages.1
State Diagram displays the sequences of states that an object of an interaction goes through during its life in response to received stimuli, together with its responses and actions.1
Activity Diagram displays a special state diagram where most of the states are action states and most of the transitions are triggered by completion of the actions in the source states. This diagram focuses on flows driven by internal processing.1

Physical Diagrams

Component Diagram displays the high level packaged structure of the code itself. Dependencies among components are shown, including source code components, binary code components, and executable components. Some components exist at compile time, at link time, at run times well as at more than one time.1
Deployment Diagram displays the configuration of run-time processing elements and the software components, processes, and objects that live on them. Software component instances represent run-time manifestations of code units.1 ?