Q: iPad application with remote database How can we implement iPad application that retrieve or store data from remote data source(Mysql). Are there any classes associate to achieve our requirement 

A: If you are retrieving a remote database, then I would recommend creating a wrapper for your DB using a server-side language like PHP to serve the request from your application, just like it serves an AJAX client request.
In your iOS, you have to create a NSURL instance and request your PHP application for data. Now, for returning the data you can use your own format or standards like JSON or XML. There are numerous public JSON/XML parsers available for iOS!

A: How do you want to handle the delay of using a radio connection? You might want to consider using a json connection and a server application instead
