Is it necessary to use an OLAP connection when you have a BEx query as a source?

[fmozas]

Hello!

I have a doubt: I need to create a webi report that use a BEx Query as source, Is it necessary to use an OLAP connection between the query and the webi report?

I have already created the report but without using or creating an OLAP connection. I simply entered the Rich Client, from there I found the query and used it as the source of the report. When I look into the query properties, looks like has created some kind of Universe.

Is there any difference between creating the OLAP connection to the query or connecting directly?

Thanks.