| 10.5 |  | Nested Object Groups |
| 10.5.1 |  | Overview |

| An object group can be a member of another object group. This is referred to as nesting. Hierarchical, or nested, object grouping can achieve greater flexibility and modularity for specifying access rules. The group-object command enables the construction of hierarchical, or nested object groups. It is important to understand the difference between object groups and group objects.

- An object group is a group consisting of objects.
- A group object is an object that is in a group, but that is also a group itself. In other words, it is an object group within an object group.

Duplicated objects are allowed in an object group if it is due to the inclusion of group objects. For example, if object 1 is in both group A and group B, it is allowed to define a group C which includes both A and B. It is not allowed, however, to include a group object which causes the group hierarchy to become circular. For example, group A cannot include group B if group B includes group A.

Now that the concept of nested object grouping has been introduced, this section will examine the process of configuring nested object groups. The demonstration activity illustrates how nested object groups are created.

| Media Activity Demonstration Activity: 5 Step Process to Creating Nested Object Groups In this activity, students will learn how to configure nested object groups.