Persistent storage is keeping the information you are working with around. In software engineering, persistence refers to the normal for the expression that outlasts the procedure that made it. This is accomplished practically speaking by putting away the state as information in PC information storage. When it comes to information diligence in IOS, there are Five huge approaches to accomplish information steadiness:-

  • UserDefaults
  • Property List
  • SQLite
  • Keychain
  • CoreData
BY Best Interview Question ON 29 Mar 2019