In this tutorial, you will learn what a Graph Data Structure is. Also, you will find representations of a graph.
A graph data structure is a collection of nodes that have data and are connected to other nodes.
Let's try to understand this through an example. On facebook, everything is a node. That includes User, Photo, Album, Event, Group, Page, Comment, Story, Video, Link, Note...anything that has data is a node.
Every relationship is an edge from one node to another. Whether you post a photo, join a group, like a page, etc., a new edge is created for that relationship.
