When you state "Graph will become the base, because it does everything an RDBMS can do and some more.", you show that you fail to understand what an RDBMS is an

When you state "Graph will become the base, because it does everything an RDBMS can do and some more.", you show that you fail to understand what an RDBMS is and that there is NO commercially available RDBMS around. There are significant differences between SQL DBMS's and RDBMS. The other thing you have also forgotten, is that you can rewrite your statement as "RDBMS will become the base, because it does everything a Graph can do and some more." The last part of this "and some more" makes both statements equally false. Or if you view it in another way, equally true. These things are tools that we have available to us so that we can solve the various problems laid before us.