How to add database in table in iOS?

I'll just create a list of children and their information in table.This data are going to register before to receive this information from the sever. How can create a database in this app.?

Here are the codes ChildListViewController.m

#import "ChildListViewController.h"
#import "AppDelegate.h"
#import "Child.h"
#import "ChildDetailViewController.h"


@interface ChildListViewController ()
{
    NSArray *_child_info;
}
@end


@implementation ChildListViewController


- (IBAction)unwindchild:(UIStoryboardSegue *)segue
{

}

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self dismissViewControllerAnimated:YES completion:nil];

    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];

    _child_info = [[NSArray alloc] initWithObjects:appDelegate, nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(receiveTestNotification:)
                                                 name:@"ChildListUpdate"
                                               object:nil];

    self.dbManager = [[DBManager alloc] initWithDatabaseFilename:@"BusTrackingParentApp.sql"];

}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"TableIdentifier";

    AppDelegate *appDelegate = [_child_info objectAtIndex:indexPath.row];

    Child *cell = (Child *) [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    if (cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Child" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

    [self.dbManager.arrColumnNames indexOfObject:appDelegate.name];
    [self.dbManager.arrColumnNames indexOfObject:appDelegate.beacon_id];
    [self.dbManager.arrColumnNames indexOfObject:appDelegate.status];
    [self.dbManager.arrColumnNames indexOfObject:appDelegate.longitude];
    [self.dbManager.arrColumnNames indexOfObject:appDelegate.latitude];
    [self.dbManager.arrColumnNames indexOfObject:appDelegate.server_created_date];
    [self.dbManager.arrColumnNames indexOfObject:appDelegate.image];


    cell.childName.text = appDelegate.name;
    cell.childbeaconID.text = appDelegate.beacon_id;
    cell.childstatus.text = appDelegate.status;
    cell.childLoclong.text = appDelegate.longitude;
    cell.childLoclat.text = appDelegate.latitude;
    cell.serverCreatedDate.text = appDelegate.server_created_date;
    cell.childimageview.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:
                                                        [NSURL URLWithString:appDelegate.image]]];

    return cell;


}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
        return 119;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];

    if (appDelegate.name != nil)
    {
        [self performSegueWithIdentifier:(@"a") sender:(self)];
    }
    else
    {

        NSLog(@"No Data %@", appDelegate.name);
    }

}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier]isEqualToString:@"a"])
    {
        ChildDetailViewController *vc = segue.destinationViewController;
        NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
        vc.appDelagate = [_child_info objectAtIndex:indexPath.row];
    }

}

- (void) receiveTestNotification:(NSNotification *) notification
{
    if ([[notification name] isEqualToString:@"ChildListUpdate"])
    {
        [self.tableView reloadData];
    }
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}