file_describes_subject.tsv

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Association between a file and a subject that it describes

If populated, file_describes_subject.tsv will contain one row for every file linked to a subject that it describes.

All fields are required: this table can be empty (header-row only), but any non-header rows must leave no fields blank.

Some examples:

• If you don't have any files that describe one or more specific subjects, this table should be left empty.
• If you have exactly one file describing or summarizing each subject, this table will have the same number of rows as subject.tsv.
• If you have five files describing each subject, this table will have five times as many rows as subject.tsv.
• If your subjects are grouped in batches of ten, with each batch described by a single file, then this table will have one tenth as many rows as subject.tsv.

Field	Field Description	Required?	Field Value Type	Extra Info
file_id_namespace	Identifier namespace for this file [part 1 of 4-component composite primary key]	Required	string	This will be the value of id_namespace in the row in file.tsv corresponding to the file referenced in this row. If your program has not registered multiple CFDE identifier namespaces, this will be exactly the same value for all rows.
file_local_id	The ID of this file [part 2 of 4-component composite primary key]	Required	string	This will be the value of local_id in the row in file.tsv corresponding to the file referenced in this row.
subject_id_namespace	Identifier namespace for this subject [part 3 of 4-component composite primary key]	Required	string	This will be the value of id_namespace in the row in subject.tsv corresponding to the subject referenced in this row. If your program has not registered multiple CFDE identifier namespaces, this will be exactly the same value for all rows.
subject_local_id	The ID of this subject [part 4 of 4-component composite primary key]	Required	string	This will be the value of local_id in the row in subject.tsv corresponding to the subject referenced in this row.

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