multiplicity

const (
	// Many2One shows that many vertices
	// connect to a single vertex. Similar
	// to One2Many but in the opposite direction.
	// Example:
	// person <-- --> birth place
	// left      | right
	// 1..* or + | 1
	Many2One Multiplicity = "MANY2ONE"
	// Many2Many shows that many vertices
	// connect to many other vertices. Similar
	// to Many2One, but instead of just one vertex
	// it's all just a cluster of vertices.
	// Example:
	// person <-- --> book
	// left      | right
	// 0..* or * | 0..* or *
	Many2Many Multiplicity = "MANY2MANY"
	// One2Many describes an edge that
	// comes from multiple vertices and
	// point towards one vertex.
	// order  <-- --> line item
	// left      | right
	// 1         | 1..* or +
	One2Many Multiplicity = "ONE2MANY"
	// One2One explains that the vertex
	// being associated connects to one
	// going in a single direction.
	// person <-- --> birth certificate
	// left      | right
	// 1         | 1
	One2One Multiplicity = "ONE2ONE"
	// Simple does not have an associated
	// direction belonging to it. This
	// results in an edge with no arrows.
	Simple Multiplicity = "SIMPLE"
	// Multi is an arbitrary multiplicity
	// explaining that this edge will have
	// multiple arrows associated with it.
	// Wikipedia:
	// http://en.wikipedia.org/wiki/Multigraph
	Multi Multiplicity = "MULTI"
)