From http://developer.apple.com/macosx/tiger/index.html:
.... Core Data
Cocoa has long provided a world-class solution for application user-interface development. And in Panther, Cocoa started providing pre-built controller objects (the "Bindings" layer) to connect various UI elements together with data models. Now in Tiger, Cocoa can manage your data objects themselves through the power of Core Data, providing automatic undo/redo support, additional user interface synchronization, and data consistency, correctness, and speed enhancements when it's time to write to disk.
Core Data gives you the ability to create a description of your data objects. Once defined, Core Data handles most of the heavy work of managing your data objects, both in-memory and on-disk. This allows you to focus on application logic and avoid the infrastructure work. In short, Core Data is a model-driven object graph and persistence framework.
In Tiger, Core Data will support three different kinds of files for storage of data:
- A text-based XML file format
- A better performing binary file format
- A high-performance, SQLite-based database file format
Each of these file formats has its strengths. The XML file format is a good choice during the development of an application as it allows you to peek inside the file and see what is going on. The SQLite format will often be the best choice for desktop applications because of its performance characteristics.
....
A very good news...
