newbie question: generic schema for LDAP servers?

[Dave Snoopy <kingsnoopy7@yahoo.com>]

Here's a newbie question for you out there. Is there
some kind of generic schema or layout for LDAP servers
regarding users?

For example, I use the following query to list all
users in my Windows 2000 domain:

(&(objectClass=user)(objectCategory=person))

But would this same query also work against an
OpenLDAP server, or some other LDAP server? Or is the
user schema totally up to the LDAP administrator to
design/choose? If the latter, are there common schemas
which LDAP admins often choose from?

Thanks,
Dave

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