Core Data is one of Apple’s latest technologies that allows the developer to effortlessly develop applications with a very complex data store. By utilizing Core Data your Cocoa application can instantly have access to a full database for storing the applications data. All without a single line of code. But what if you want or need to store parameters that may be file specific but not application specific? In this article InformIT will walk through one solution that allows for elegant access to document specific parameters in a Core Data application.