About Incremental Stores

An incremental store is a Core Data store that allows you piecemeal access to its content. This means that you can bring into memory just the data your program needs to operate, rather than the entire contents of the store. An incremental store is therefore much more efficient than an atomic store which must bring all the data into memory (see Atomic Store Programming Topics).

NSIncrementalStore is an abstract class. You must create your own custom subclass to implement an incremental store.