How to integrate Data Modeler with Delphi XE6 and upwards
I read somewhere that this is possible.
i.e. how to make them work in harmony for database design and then later coding
The current integrated way to use Data Modeler and Delphi is using the Export To Aurelius option, which would create mapped entity classes that will allow you to interact with database (either with DML or DDL statements) using TMS Aurelius.