SQL queries of LDAP directory

[Allan Streib <astreib@indiana.edu>]

Are there any tools that provide a SQL interface to LDAP directories?
I have seen mention of something called Enlist, but the link at
ldapzone.com is broken.

Ideally what I am looking for is a something that would allow me to
write a SELECT query that would "join" Oracle tables with the
directory using a SQL syntax.  I don't need to support directory
updates via SQL.  Does anyone know if such a thing exists?

Thanks,

Allan