As has been mentioned, Inventory is used to create collections and reports. Collection queries can contain computer or user objects. A collection might contain:
- Objects that meet conditions from the WMI query: The number of collection members might be dynamic and change over time
- Objects added manually to the collection: The number of members will always be constant unless someone adds one
- Objects added manually that meet certain WMI query conditions: Such collections will also be constant unless someone adds objects that meet the requirements