# Graph-based Data Structure

A Graph-based Data Structure is a data structure that can contain graph data (which represent a graph).

## References

### 2017

• (Wikipedia, 2017) ⇒ https://en.wikipedia.org/wiki/Graph_(abstract_data_type) Retrieved:2017-6-8.
• In computer science, a graph is an abstract data type that is meant to implement the undirected graph and directed graph concepts from mathematics, specifically the field of graph theory.

A graph data structure consists of a finite (and possibly mutable) set of vertices or nodes or points, together with a set of unordered pairs of these vertices for an undirected graph or a set of ordered pairs for a directed graph. These pairs are known as edges, arcs, or lines for an undirected graph and as arrows, directed edges, directed arcs, or directed lines for a directed graph. The vertices may be part of the graph structure, or may be external entities represented by integer indices or references.

A graph data structure may also associate to each edge some edge value, such as a symbolic label or a numeric attribute (cost, capacity, length, etc.).