Room cannot verify the data integrity

Question

I am getting this error while running program with Room Database

Room cannot verify the data integrity. Looks like you\'ve changed schema but forgot to updat         


        

Answer 1

If you are upgrading Room version to 1.0.0-alpha9 from old version then please visit below article. Very Good Article for Migrate from old version to 1.0.0-alpha9 version.

https://medium.com/@manuelvicnt/android-room-upgrading-alpha-versions-needs-a-migration-with-kotlin-or-nonnull-7a2d140f05b9

In Room New Version 1.0.0-alpha9 Room adds support for the NOT NULL constraint.

That is going to change the schema that Room generates. Because it changes the schema, it also changes the identityHash of the DB and that is used by Room to uniquely identify every DB version. Therefore, we need a migration