Sequence diagrams, DOT NET Programming

Describe the various components in sequence diagrams.

171_squence diagram.png

Object lifeline: - It shows the lifetime of an object creation and its destruction. If the object is created or destroyed during the time span the diagram represents, then the lifeline stops or starts at the appropriate point. An object's destruction is marked with a large X.

Activation: - It is a time period during which actor is performing an action.

Lifeline: - The Lifeline says that there exists some condition on the object lifetime.

Message: -The Message shows the communication between objects that conveys information and results in an action.

Message (call):- It is same just like a message but also conveys some information and results in action.

All messages have similar definition as the Message (Call) given above.

2-Element Constraint: - It represents a constraint on two classes or associations.

OR constraint: - It represents an OR constraint on two classes or associations.

Posted Date: 9/25/2012 1:04:29 AM | Location : United States







Related Discussions:- Sequence diagrams, Assignment Help, Ask Question on Sequence diagrams, Get Answer, Expert's Help, Sequence diagrams Discussions

Write discussion on Sequence diagrams
Your posts are moderated
Related Questions


Are you available to discuss about my project. I'd like you to show first and then accept the project provided if we both agree to continue with each other. Skills required:

What is the difference between Authentication and authorization? This is  a tricky question. These two concepts seem altogether same  but there is big  difference. The Authenti

Project Description: We have a web based program prepared with .NET C# and Microsoft SQL Server. There are some reports needs to be created. Required Skills. - High Pro

Project Description: I am seeking a serious and motivated software developer that can create for me software like scanspeeder with all the functions as it has. Only thing that I

Explain the difference between an ADO.NET Dataset and an ADO Recordset. The two main basic differences between recordset and dataset are as shown below :- 1) With the datase

What is the use of connection object? The connection objects are used to connect a data to the Command object. 1)An OleDbConnection object is used with the  OLE-DB provider

Problem: (a) Define the term ViewState as used in the ASP.NET framework. (b) What is a StateBag class? Give a simple example to support your answer. (c) (i) Distingui