SAP HANA had this feature as well, and I was looking forward to when this would be added to the IDT and it has in BI4.1
First go to Help > Cheat Sheets
Then you can select a cheat sheet from either the OLAP universe or relational. I select relational.
Follow the steps along to create your relational universe.
Also check out this tutorial Information Design Tool 4.1: What’s new in SAP BusinessObjects Information Design Tool 4.1 by the SAP In Product Education Team.