title: Two UIPickerViews with Large Data Set
body: <p>I would like to create a simple app in Xcode with two UIPickerViews that reference a data set where the second UIPickerView is dependent on the first one. I want to create an app where the user can select the manufacturer of a vehicle; Chevrolet, Dodge, Ford, etc. Then, the user can select the vehicle based on the first choice. For example if &quot;Ford&quot; was selected in the first UIPickerView, then only Ford vehicles show up in the second - F150, Focus, Mustang etc. After selecting both values, the user can search for the average price where the prices are kept in a data set. I found many examples with one UIPickerView referencing arrays, but I want to reference a much larger data set. How would I go about doing this? I am fairly new to Xcode, but I write SAS and SQL code daily.</p>