Yesterday, I had the opportunity to speak at WomenWhoCode Mobile event. It was a remote event and well attended. I spoke about SwiftUI architecture best practices.

When I was covering Core Data I mentioned that you should use @FetchRequest property wrappers as they are optimized to work with SwiftUI. Same is true for @Query property wrapper in SwiftData.

During this time an interesting question was raised. An attendee asked what if you want to change the data access layer in the future. Currently our views are tightly coupled with either Core Data or SwiftData but what happens if we want to use Realm or GRDB.

I have thought about this question for a very long time. This is one of those questions, which does not have a straight forward answer or a single answer to be exact. The answer is opinion based so let’s take a look at both sides of the equation. I will use SwiftData in my examples.