Vertices

The vertex element defines a vertex in the query. The name of the vertex, as defined in the query, is provided in the required name attribute. The vertex element may contain an optional condition element and an optional numeric-annotation element. Vertices in the query are matched to objects in the database.

<vertex>

Attributes 

name required Vertex name as used in the query; vertex names are case sensitive

Children 

condition zero or one Restrictions on the link’s attribute values
numeric-annotation zero or one Cardinality requirements for matching links

Content Model 

(condition?, numeric-annotation?)

Example 

<vertex name="A">
  <condition> see condition </condition>
  <numeric-annotation> see numeric-annotation </numeric-annotation>
</vertex>