| Mode | Description | Specified input | Output alteration |
|---|---|---|---|
| Addition | Data units | This could alter the list as filters can add data so a set of addition-s and removal-s | |
| Removal | |||
| Deletion | When data is deleted it is known that it is not needed in the |
well there is not much point if the operation is going to reinclude all data during incremental filtration if added data can be influenced by removal-s then an accurate result can only be obtained by full filtration might as well just stick to full filtration