The subject of the subj-predicate-obj sentence. This is typically the subfeature.
The object of the subj-predicate-obj sentence. This is typically the container feature.
Relationship type between subject and object. This is a cvterm, typically from the OBO relationship ontology, although other relationship types are allowed. The most common relationship type is OBO_REL:part_of. Valid relationship types are constrained by the Sequence Ontology.
Additional notes or comments.
The ordering of subject features with respect to the object feature may be important (for example, exon ordering on a transcript - not always derivable if you take trans spliced genes into consideration). Rank is used to order these; starts from zero.
Table contained -1 rows
|feature_relationship_c1||Must be unique||Asc/Asc/Asc/Asc||subject_id + object_id + type_id + rank|