sending data to a server from ipad

i m developing an ipad app开发者_开发知识库 for hospital management were information is filled in the user interface and on the click of a button the data is to be transfered to an external database(which later be viewed)...what are the steps required

You need to set up a webservice (like Saurabh said), for instance a PHP file using an mySQL connection would do fine.

To post the data (unsecured) to the service you can dome something like this:

NSString *post = @"key1=val1&key2=val2";
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:@"http://www.someurl.com"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-    Type"];
[request setHTTPBody:postData];

NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:request delegate:self];

Read the NSURLConnection documentation

You need to create webservices on your server to add data in your database see the answer of this question to know how to send data

Send data from an iPhone to a Web service