relationshipsfrom

Relationshipsfrom is a term used in graph data modeling to denote the set of outbound relationships that originate from a given node. It characterizes how a node connects to other nodes through edges, including edge types and target nodes.

In practice, it is used to describe and query a node's direct successors, and to drive traversals or analyses that proceed one step at a time.

Definition: For a node v, relationshipsfrom(v) returns the collection of outgoing edges e=(v,u) for all adjacent nodes u, optionally filtered by edge label or property.

In popular graph query languages the concept maps to outbound traversals: Cypher patterns that start at a node with an outgoing relationship, Gremlin's outE() and inV(), and SPARQL property paths that follow an outgoing property.

Applications include neighborhood discovery, out-degree measurement, path exploration, and filtering by relationship type or attribute.

Notes: The exact term is not standardized; documentation and libraries may refer to it as outboundEdges, outgoing, or outE(), depending on the system.

Related concepts include relationshipsTo, degree, and adjacency; see also graph traversal, edge labeling, and directed graphs.