User-defined-role overview
 
   
   
	  A user-defined role starts from a basic set of privileges which are then refined by adding rules. You assign a name to the role and then associate the role to one or more user accounts. 
	 
 
	  The following tools are available for managing user-defined roles: 
	 
 
	  
		-  The 
		  role command defines new roles and deletes user-defined roles. 
		
  
		-  The 
		  rule command allows you to specify access rules for specific operations and assign these rules to a given role. 
		
  
		-  The 
		  username command associates a given user-defined role with a specific user account.