Navigation Controllers and Table Views
In the previous chapter, you mastered the basics of working with table views. In this chapter, you'll get a whole lot more practice, because we're going to explore navigation controllers.
Table views and navigation controllers work hand in hand. Strictly speaking, a navigation controller doesn't need a table view in order to do its thing. As a practical matter, however, when you implement a navigation controller, you almost always implement at least one table, and usually several, because the strength of the navigation controller lies in the ease with which it handles complex hierarchical data. On the iPhone's small screen, hierarchical data is best presented using a succession of table views. ...