[Asterisk-Users] voicemail ODBC storage question

[Timur V. Elzhov]

Hello guys.

Did anybody use voicemail ODBC storage feature? All "voicemessages"
fields name are clear except for "dir", which is assigned to
  "/var/spool/asterisk/voicemail/default/1234/INBOX".

Why do we need any directory when we store voicemessages in the database?
Noreover, that field is choosen as the KEY or INDEX (marked as MUL in
README.odbcsrorage, so I coulnd't say definitely what's that). Why?

Much thanks.


-- 
Best regards,
Timur Elzhov