I have selected window based universal application and started coding for my app.
Now i got a requirement to use database and i found that CoreData is more preferable.
Is there any way to add Coredata to my current project, if yes how?
See the Core Data Programming Guide or the documentation for more details that are open for developers only. This guide is very helpful and there are the CoreDataBooks and iPhoneCoreDataRecipes sample codes to get you started.
For a quick solution, create a new navigation controller project and tick the Core Data checkbox. Then copy the Core Data methods that you are missing. You can also use the Core Data code snippets that are available in the Xcode library.