Lalitha,
There are many real time scenarios w.r.t to project. I would say first explore the flow tutorials availabe on SAG tech community, view videos on internet, read sag documentation on webMethods.
Here are the few real time scenarios for you to kick start with
1> XML to DB
2> DB to XML
3> Use flat file
4> FTP, File polling etc
#Integration-Server-and-ESB#webMethods#webMethods-General