List required references
Synthetic records R1→F1, R2→F2, R3→F2 all require their attachment. Object inventory contains F1 and F3. Objects are matched by exact identity; an unrelated orphan cannot stand in for a missing reference.
| Record | Required object | Resolved |
|---|---|---|
| R1 | F1 | Yes |
| R2 | F2 | No |
| R3 | F2 | No |
| Unreferenced object | F3 | Not a substitute |
Resolve each reference once
- Union required object IDs
- Match against available objects
- Count affected records separately
Do not delete an unreferenced object based on this drill; it has no disposition policy.
How many distinct objects and records are missing support?
Show the worked answer
One distinct object F2 is missing, affecting two records R2/R3. F3 is one orphan relative to this supplied reference set.
Separate orphans from missing objects
| Case | Decision | Reason |
|---|---|---|
| Count missing references | Two affected records | Both needF2 |
| Count missing object IDs | One missing object | F2 deduplicated |
Restore F2 and verify both dependent records. Raw object counts cannot establish that the right attachments were recovered.