Flow of Siebel application

The data it will get to the application or UI with the help of layers.
The layers are given below,
1. Application layer
2. Business layer
3. Data layer.
The working function of Siebel is it will fetch the data from Data layer then it will give the fetched data to Application layer through Business layer.
(When we enter URL in web client and request send to web server, in the web server the virtual directory receives the request and checks against each installed application and if it finds the application [URL], then the request forward to SWSE (Siebel web server extension). SWSE creates and maintains TCP/IP connections with Siebel server. It obtains the connectivity parameters from eapps.cfg file. Then the object manager takes the request and gives it to the Siebel server, the Siebel server interns sends the request to data manager and data manager send response to Siebel server. The Siebel server interns response back to object manager. The object manager pushes the data on to the web client.)