Read this first https://developer.android.com/reference/android/database/sqlite/SQLiteOpenHelper.html
In the onUpgrade helper you can execute SQL statements to add columns, add/alter tables, drop tables, etc., whatever your need is. Here is some more info http://stackoverflow.com/questions/14419358/confusion-how-does-sqliteopenhelper-onupgrade-behave-and-together-with-impor On Thursday, November 5, 2015 at 5:07:54 AM UTC-5, Jags wrote: > > Hi All, > > I need to implement data migration in my app. I have an sqlitedb which is > synchronized to cloud. my problem is to find best way to handle data > migration on app update. > > my questions are below. > > - does my existing data and database get deleted on app upgrade ? > - is it possible to invoke a method on successful installation / upgrade ? > - is it possible to bundle an empty db with app in playstore ? > - is it possible to change the database schema of existing db or i need to > create new db with new schema and migrate and delete old db ? > - what is the best and google recommended way to handle this ? > > regards > j > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
