Here is answer?
1) QV can connect to almost any datasource like Oracle, Sql, SAP, Excel, CSV etc to retrieve the data
3) QVD is native format
4) Basicly two type: Enterprise and SMB QV Server
5) Drill Group may be
Qlikers, correct me if sth wrong
4) There are a lot more server types. Can't find a pointer to a document that lists them, though. Found it: How many types of servers
These days, I'm getting the impression that there is something terribly wrong with the search box in this Community software. Should we report this to Community Management?