https://www.ibm.com/docs/en/db2-for-zos/13.0.0?topic=module-defining-class-names-administrative-authorities
Db2 13 - RACF - Defining class names for administrative authorities
RACF security administrators can create profiles with specific Db2 administrative authorities that allow users to access resources.
defining classdb213racfnames
https://www.cjr.org/campaign_desk/middle_class.php
Defining "Middle Class" - Columbia Journalism Review
Joe Biden and the White House Task Force on the Middle Class
middle classcolumbia journalismdefiningreview
https://www.ibm.com/docs/en/zos/3.1.0?topic=server-defining-ldapbind-class-profile
Defining an LDAPBIND class profile
definingclassprofile