id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	repo	theme
254	Package relationships - 1. model	dread	dread	"New domain object: PackageRelationship (revisioned)

Attributes:
  * subject (Package reference)
  * object (Package reference)
  * type (string)
  * comment

Relationship type values:
is_dependent_on (is_dependency_of)
is_derived_from (has_derivation)
is_child_of (is_parent_of)

Relationship type is stored as a string, as given in the first column. The reverse relationship (bracketed) is given just for display purposes only.

Subject / Object - as in a sentence: ""Dracos is derived from OSM"" is <subject> <predicate> <object>. We'll use 'type' instead of 'predicate' as that is a more familiar word.
"	enhancement	new	blocker		ckan