Which datastore (database) should be used for Spring-boot REST API application with AZURE

There are may blog available around this but still not getting exactly what is needed.

I am trying to write a REST API with Spring Boot and store data in database. Here the database structure may change (new tables can get introduced or some existing names may get renamed).

Which DB can be used so that there would be minimal code changes needed both at java side and DB side.

What could be a best design approach in this scenario considering technology stack as Spring Boot and Azure