[Dovecot] Multiple userdb possible?

[Nikolaos Milas]

Hello,

I am running v2.0.13. In my dovecot.conf I have:
userdb {
  args = /etc/dovecot/dovecot-usrdb-ldap.conf
  driver = ldap
}

passdb {
  args = /etc/dovecot/dovecot-passdb-ldap.conf
  driver = ldap
}

Is it legitimate to include multiple ldap userdb's, like:

userdb {
  args = /etc/dovecot/dovecot-usrdb-ldap1.conf
  driver = ldap
}

passdb {
  args = /etc/dovecot/dovecot-passdb-ldap1.conf
  driver = ldap
}

userdb {
  args = /etc/dovecot/dovecot-usrdb-ldap2.conf
  driver = ldap
}

passdb {
  args = /etc/dovecot/dovecot-passdb-ldap2.conf
  driver = ldap
}

If it is legitimate (in case configuration is different, please correct 
me), in which sequence userdb's are evaluated?

Thanks,
Nick