lol. You are correct , it is pick.
I used Unidata via a broker RedBack by IBM to read and update data in there from .Net.
Its not relational. It is file based running on mainframe I think, totally different from SQL Server architecture. We have a huge app running on Unidata/Universe DB.
As I mentioned,the only way to talk to Unidata from a non pick client is via RedBack. But someone still must write the RBO(redback object) in pick.
Recently they added XML capabilities to it.
I would not want to deal with it.