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
ASP.NET 2.0 application port to ASP.NET MVC Project Description: Legacy ASP.NET application for managing tasks for a private client needs a complete re-write. The applicat

Explain collation sequence in sql server. The Collation sequences are the set of rules which determine how the data is sorted and compared. The Sorting rules can be defined wit

Difference between VB.NET and C# This is the main debatable issue in .NET community and everyone treat their languages like religion. It is a very important matter which lan

What's the difference b/w Unit testing, Assembly testing and Regression testing? The Unit testing is also known as the Component testing. The Unit testing ensures that the reli

Project Description: System is used for tracking company's activities through several projects by keeping track of incomes and expenses per project. This project is fairly ea

Explain different software development life cycles. The System Development Life Cycle (SDLC) is the overall process of developing information systems through multi stage proces

What are the criteria necessary for an effective and efficient network? a. Performance It can be measured in several ways, including transmit time and response time. b

Explain why your project needed XML. Remember XML was meant to exchange data between the two entities as you can define your user friendly tags with ease. In the real world sce

What is Array List? An Array is whose size can increase or decrease dynamically. The Array list can hold item of various types. As Array list can increase and decrease his size