Assume SMITH is your user ID; then SMITH is the authorization ID when you execute the following statement interactively:
GRANT SELECT ON TDEPT TO KEENE
SMITH is the authorization ID of the statement. Thus, the authority to execute the statement is checked against SMITH.
KEENE is an authorization-name specified in the statement. KEENE is given the SELECT privilege on SMITH.TDEPT.
(C) Copyright IBM Corporation 1992, 2006. All Rights Reserved.