TableInfo: collection_in_collection.tsv

Each row in this table asserts "the second listed collection is a subcollection of the first listed collection."

Usage notes:

• Collections need only be explicitly linked to their immediate parents via collection_in_collection.tsv. Transitive containment of each collection (by more distant ancestor collections than its immediate parent collection) will be automatically inferred.

• Please see the technical docs for a complete discussion of the rules governing the use of this table.

Field	Field Description	Required?	Field Value Type	Extra Info
superset_collection_id_namespace	The identifier namespace for the parent in this parent-child collection pair [part 1 of 4-component composite primary key]	Required	string	This will be the value of id_namespace in the row in collection.tsv corresponding to the parent collection referenced in this row. If your program has not registered multiple CFDE identifier namespaces, this will be exactly the same value for all rows.
superset_collection_local_id	The ID of the containing (parent) collection in this parent-child collection pair [part 2 of 4-component composite primary key]	Required	string	This will be the value of local_id in the row in collection.tsv corresponding to the parent collection referenced in this row.
subset_collection_id_namespace	The identifier namespace for the child in this parent-child collection pair [part 3 of 4-component composite primary key]	Required	string	This will be the value of id_namespace in the row in collection.tsv corresponding to the child collection referenced in this row. If your program has not registered multiple CFDE identifier namespaces, this will be exactly the same value for all rows.
subset_collection_local_id	The ID of the contained (child) collection in this parent-child collection pair [part 4 of 4-component composite primary key]	Required	string	This will be the value of local_id in the row in collection.tsv corresponding to the child collection referenced in this row.