If a process in Domain Di tries to do “op” on object Oj, then “op” must be in the access matrix
User who creates object can define access column for that object
Can be expanded to dynamic protection
Operations to add, delete access rights
Special access rights:
owner of Oi
copy op from Oi to Oj (denoted by “*”)
control – Di can modify Dj access rights
transfer – switch from domain Di to Dj
Copy and Owner applicable to an object
Control applicable to domain object