PhotoKit’s Core Data Model
In my quest to understand the Photos framework better (especially its performance characteristics), I wanted to inspect its data model. I found a file named
PhotoLibraryServices.framework/photos.momd/photos-10.0.momdeep in the bowels of the Xcode 10.0 app bundle[…][…]
A
.momfile is a compiled Core Data model. Xcode can’t open this directly, but it can import one into another Core Data model. Follow these steps to view the model in Xcode[…]
The Mac version of Photos doesn’t use Core Data, but instead a custom SQLite database format that originated in Aperture. Looks like a similar number of tables/entities though.
That’s correct (former UI engineer here ) The Aperture database format served as the basis for the shared library format between Aperture & iPhoto. That library format was then evolved for Photos library and cloud integration.
Previously: The History of Aperture.
Update (2018-10-02): Guilherme Rambo:
The Core Data model used by “Find My Friends”.
