I am using repository pattern in my app so the repository has such a function: func getAll() throws -> some Publisher<[CryptoPrice], Never> { let descriptor = FetchDescriptor<CryptoPriceDbEntity>() let testPublisher = try context.fetch(descriptor) .publisher .print() .map { dbEntity in CryptoPriceMapper.mapFromDbEntity(dbEntity) } .collect() .print() .eraseToAnyPublisher() //FIXME: this publisher send one value and then close. Is it normal behaviour of swift Data return testPublisher } and the view model subscribe to this. I was expecting the view model to receive the new query result whenever it the database changes as a constant stream. But I was surprised to see the publisher send some data once and then it close immediately. Is it normal behaviour of SwiftData or is there a big in this code ?