How to write a signingout code in android

I am creating an application that consists of registration page and Login page using SQlite database and i want to logout from that activity after clicking Logout button and is there any code for logout. I google it and many of them showed using shared preferences, But here i used sqlitedatabse not the shared preferences.Is the logic is same for the logout using shared preferences and sqlitedatabase in android can any one help me please how to write logout code.