iphone - Error on Xcode 4.3.2

I am new on iphone programming..
I keep getting the error
and I have no idea how to change the permission for SQLite

Error while updating. attempt to write a readonly database

and the following is my coding

NSString *filePath = [[NSBundle mainBundle]pathForResource:@"card" ofType:@"sqlite"];
sqlite3_stmt *statement;

if(sqlite3_open([filePath UTF8String], &db) == SQLITE_OK)

{
  const char *query_stmt = "UPDATE card SET isActivate =?";


  if(sqlite3_prepare_v2(db, query_stmt, -1, &statement, NULL) != SQLITE_OK)

     {

         NSAssert1(0, @"Error while creating update statement. '%s'", sqlite3_errmsg(db));

     }

}

sqlite3_bind_int(statement, 1, 1);

if(SQLITE_DONE != sqlite3_step(statement))

   {

      NSLog(@"Error while updating. %s", sqlite3_errmsg(db));

    }

sqlite3_finalize(statement);
sqlite3_close(db);

Hope someone could help me because this really makes me feel frustrated..