wagtailcore_collection: 1

This data as json

id	path	depth	numchild	name
1	0001	1	0	Root

Links from other tables

12 rows from collection_id in wagtailcore_groupcollectionpermission
0 rows from collection_id in wagtailcore_collectionviewrestriction
0 rows from collection_id in wagtaildocs_document
0 rows from collection_id in wagtailimages_image