Core Data or SQLite or Realm? Hello. I‘m confused on which database solution to use for my apps.  Which one of the options is faster? Can they all handle large amounts of data? Can they all be used with a server? For instance, can I update the database on the phone with the database on the server easily? And most importantly, what are their different use cases? Some say Core Data is more memory-efficient - stackoverflow.com/questions/6663854/difference-between-core-data-and-sqlite and some say Realm is faster (agilie.com/en/blog/coredata-vs-realm-what-to-choose-as-a-database-for-ios-apps). However, none of them are based on official information. They are all their respective writers’ opinions. I want official and trusted information, like a webpage from Apple’s or Realm’s website comparing different solutions, or a part of a WWDC session. Please provide me OFFICIAL INFORMATION. Answers from Apple engineers especially the ones at WWDC20 are highly appreciated. Tags: Core Data, iOS, Files and Storage, WWDC20 Community