BigQuery schema: legal_versions

The BigQuery table gse-roar-admin.admin.legal_versions conforms to the following schema:

Field name	Data type	Key type	Description
legal_version_id	STRING	PK	The unique identifier for the legal version
document_name	STRING	UK	The database document path
timestamp	TIMESTAMP		The commit timestamp of this change in Cloud Firestore.
valid_from	DATE		The date from which the document is valid