WriteRelationshipsRequest(WRR)

vs

DeleteRelationshipsRequest(DRR)

Do I understand correctly that: 1.

WRR

is atomic and might have write, update, delete when

DRR

is only about delete and is not atomic? 2.

WRR

for delete requires all: object_type, object_id, relation, subject_type, subject_id, when

DRR

requires only 1 field because of

DRR Filter

? 3. Updating is better to do with

WRR Touch

? (in the doc it is mentioned that this is upsert method)