Trilium/docs/Developer Guide/Developer Guide/Development and architecture/Database/branches.md

branches

Column Name	Data Type	Nullity	Default value	Description
branchId	Text	Non-null		The ID of the branch, in the form of a_b where a is the parentNoteId and b is the noteId.
noteId	Text	Non-null		The ID of the note.
parentNoteId	Text	Non-null		The ID of the parent note the note belongs to.
notePosition	Integer	Non-null		The position of the branch within the same level of hierarchy, the value is usually a multiple of 10.
prefix	Text	Nullable		The branch prefix if any, or NULL otherwise.
isExpanded	Integer	Non-null	0	Whether the branch should appear expanded (its children shown) to the user.
isDeleted	Integer	Non-null	0	1 if the entity is deleted, 0 otherwise.
deleteId	Text	Nullable	null
utcDateModified	Text	Non-null		Modification date in UTC format (e.g. 2023-11-08 16:43:44.204Z)