Install Oracle Data Modeler 4.0 on Ubuntu 14.04

This little HOW-TO will explain how to install Oracle's Data Modeler 4.0 on Ubuntu 14.04
First download the Oracle Data Modeler 4 rpm from Oracle's website http://www.oracle.com

Install alien to be able to convert .rpm packages to .deb

sudo apt-get install alien

Convert and install the Data Modeler 4 .rpm
This way you will be able to link the program on the launcher

sudo alien --scripts datamodeler-4.0.*.rpm 
sudo dpkg -i datamodeler_4.0.*.deb 

Fix an install bug and the startscript for Data Modeler so it won't crash on startup
Edit /usr/local/bin/datamodeler and add:
unset -v GNOME_DESKTOP_SESSION_ID to the first line in the start script.

sudo touch /opt/datamodeler/datamodeler/types/defaultdomains.xml
sudo chown username.username /opt/datamodeler/datamodeler/types/defaultdomains.xml
sudo vi /usr/local/bin/datamodeler

Done! Now you can find and start it in unity!