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Can someone please explain me the meaning of “For a very simple application it is certainly the case that Core Data adds some overhead (compare a vanilla Cocoa document-based application with a Cocoa Core Data document-based application), however Core Data adds significant functionality.”
I found this in Core Data documentation.
I am having a small app which contains lot of images and certain set of data interlinked.
What kind of overheads I can come across if I choose Core Data for my app?
It just means that you pay a small performance penalty in that launchtimes may be ever-so-slightly longer; there’s also slightly increased memory usage. Especially with the 3GS and 4, that wouldn’t be something I would worry about though.
And if you have to work with a certain amount of data, the benefits of Core Data (fast object retrieval and persistence) certainly outweigh the added “overhead”.