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    <p>Your fundamental problem is that you are getting your different parent-child hierarchies confused.</p> <p>To recap: MVC is Model, View and Controller.</p> <p>iOS has TWO different parent-child hierarchies: One for the controllers and one for the views.</p> <p>The following are part of the controller parent-child hierarchy:</p> <pre><code>- TabBarController - LugaresNavController (UINavigationController) - LugaresViewController (UIViewController) </code></pre> <p>This means that LugaresViewController.parentViewController should be LugaresNavController and so on.</p> <p>However the following doesn't make any sense:</p> <pre><code>- SubView (UIView) - MapViewController (UIViewController) - TableViewController (UITableViewController) </code></pre> <p>Views can have subviews but views can't have subviewcontrollers,</p> <p>Are you doing the following?</p> <pre><code>- SubView (UIView) - MapViewController.view (UIViewController s view is a subview of Subview) - TableViewController.view (UITableViewController s view is a subview of Subview) </code></pre> <p>This is a view parent-child hierarchy. This means that:</p> <ol> <li>SubView has two subviews (MapViewController.view and TableViewController.view)</li> <li>MapViewController.parentViewController is nil.</li> <li>MapViewController.navigationController is nil.</li> </ol> <p>you can use view transtions to switch between MapViewController.view &amp; TableViewController.view but not viewController transitions (such as presentModal... or push or pop ViewController...).</p> <p>If this is what you want, then you just have to make sure that you do:</p> <pre><code>[SubView addSubview: MapViewController.view]; [SubView addSubview: TableViewController.view]; </code></pre> <p>Incidentally, SubView is a terrible name. Usually we call those containerView or something like that. subview is such an important concept you want to be able to diffrentiate the concept of a subview from the instance of that view. It's like naming your child "Kid" or your dog "Puppy".</p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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