Hana Accelerator - Custom Reports

Hi All,

     I read this http://scn.sap.com/community/developer-center/hana/blog/2012/06/16/sap-hana-application-accelerator, but I have some doubts.

1. What is RDA_MAINTAIN? This report is installed with SAP NOTE 1696402?
2. Before install SWT2DB (SAP NOTE 1696402), I have to create a secundary connection between ERP-HANA on DBACOCKPIT (DBCON)? only this?
3. To work with custom objects just create scenarios with this objects? Why I have to use the Zreport to edit the scenarios?

Thank you.