Hi.
A paper describing the bookkeeping part of
the KLOE database is available as a KLOE memo nr. 226.

In this paper all the tables and views the users should
use to find out the status of runs and files
(raw, datarec and mc) are described.

There is also a short introduction about the KLOE file
movement and a short introduction to relational databases
as well.

Hope it will prove to be a viable help for accessing
the DB.

Ciao ciao,
  Igor

P.S.: From the offline manuals Web page you can find also
      a link about the SQL language.