sqlite connection with Objective C

Are you sure your xyz.sqlite3 file is included in the correct Target Membership? If it is not included, then it will not be copied to your bundle when building.

Try this

in.h file

 NSString *databasePath;in .m fileNSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,               NSUserDomainMask, YES);  NSString *documentsDir = [documentPaths objectAtIndex:0];  databasePath = [documentsDir stringByAppendingPathComponent:@"dbname.sqlite"];      [self checkAndCreateDatabase];-(void) checkAndCreateDatabase    {     // Check if the SQL database has already been saved to the users phone, if not then copy it over     BOOL success;     // Create a FileManager object, we will use this to check the status     // of the database and to copy it over if required     NSFileManager *fileManager = [NSFileManager defaultManager];     // Check if the database has already been created in the users filesystem     success = [fileManager fileExistsAtPath:databasePath];     // If the database already exists then return without doing anything     if(success) return;     // If not then proceed to copy the database from the application to the users filesystem     // Get the path to the database in the application package     NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath]  stringByAppendingPathComponent:databaseName];     // Copy the database from the package to the users filesystem     [fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];   }