How to call my analytical view in WEBI

Hi,

In HANA we created few attribute views and one analytical view(did all the joins). I could see the data in data preview.
Now I need to call this values in my webi.

1. Do i need to create a universe on my analytical?

2. If yes, Should i join all the attribute views to analytical view in universe as well?

Can anyone please tell me on how to call this in my webi in detail?

Thanks
Sri