This is not intended as a comprehensive reference!

Information retrieved from *.schema files in OpenLDAP schema folder by searching for ^objectclass

• Parentheses indicates parent objectClass
• Bold indicates required attribute

person (top) - core.schema

• cn
• sn
• userPassword
• description

account (top) - cosine.schema

• userid
• description

organizationalRole (top) - core.schema

• cn
• telephoneNumber
• street
• postalCode
• postalAddress
• description

simpleSecurityObject (top) - core.schema

• userPassword

posixAccount (top) - nis.schema

• cn
• uid
• uidNumber
• gidNumber
• homeDirectory
• userPassword
• loginShell
• description

inetOrgPerson (organizationalPerson) - inetorgperson.schema

• displayName
• givenName
• homePhone
• homePostalAddress
• initials
• mail
• uid