Question

enter code hereIn my Application I am using Sqlite as an externel data base. So, Please Reply.I am using Xcode finding defficult to communicate to the sqlite file and Managed Object Model..


    enter code here



- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
    if (__persistentStoreCoordinator != nil)
    {
        return __persistentStoreCoordinator;
    }

    NSURL *storeURL=[[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"CoreDataBountyHunter.sqlite"];

    NSError *error = nil;
    __persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
    if (![__persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error])
    {

  //     
         Typical reasons for an error here include:
         * The persistent store is not accessible;
         * The schema for the persistent store is incompatible with current managed object model.


        NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
        abort();
    }    

    return __persistentStoreCoordinator;
}

Answer 1

Core Data is not intended to be used with an external SQLite database, unless you implement your own store. If an external database with predefined schema is what you need then don’t try to fit Core Data into your solution. Instead use the standard C API to talk to your SQLite database.