3.1.1.2.4.4 Structure Rules

Structure rules define the possible tree structures. In Active Directory, the structure rules (for directory hierarchy, see section 3.1.1.2.4.2) are completely expressed by the possSuperiors and systemPossSuperiors attributes that are present on each classSchema object. The union of values in these two attributes specifies the list of classes, instances of which are allowed to be parents of an object instance of the class in question.