If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
It is possible to create database view by code? E.g I have a two tables which tablename is in mv_ddtab, and the other mv_tab, I also need change a field names. the view will be join of two tables with all fields which tables constains.