iOS/macOS에서 직접 실행되는 경량 모바일 데이터베이스로 ORM 없이 객체 지향적 데이터 관리 가능

// Xcode: File > Add Packages > realm/realm-swift 입력
// 또는 Package.swift에 추가:
.package(url: "https://github.com/realm/realm-swift.git", .upToNextMajor(from: "10.0.0"))

import RealmSwift

class Dog: Object {
    @Persisted var name: String
    @Persisted var age: Int
}

let dog = Dog()
dog.name = "Rex"
dog.age = 1

let realm = try! Realm()
try! realm.write {
    realm.add(dog)
}

let realm = try! Realm()
let allDogs = realm.objects(Dog.self)
let puppies = allDogs.where { $0.age < 2 }

struct DogsView: View {
    @ObservedResults(Dog.self) var dogs
    
    var body: some View {
        List {
            ForEach(dogs) { dog in
                Text("\(dog.name) (\(dog.age) years)")
            }
        }
    }
}