10-05-2012, 04:47 PM
System
1stReview(2).ppt (Size: 269 KB / Downloads: 31)
What is system?
System is some set of functionalities.
A group of interdependent items that interact regularly to perform a task.
Types of system
Physical System
-physical means the existing system.
Logical System
-logical means here, what we are proposing to develop.. i.e. Proposed system
Layers of An Application
Presentation Layer.
--All the components and documents that are related to user-interface , i.e. called as Presentation layer
Business Layer
--Piece of code, that implements rules of business (required functionalities of client)
In MVC that comes under model layer
Data Layer
The complete database comes under Data layer
Types of Applications
Architecture:
An Architecture is the activity of designing and constructing System.
These are the types of systems we can develop.
Standalone/Desktop (Single tier)
Client-Server (Two-tier)
Web-Based App (Three-tier)
Business Application (Broker Architecture)
Enterprise App (Multi-tier or n-tier)