In this post..
I hope to set down some details reagarding Neo4J, this is hopefully the first in a collection of posts regarding this tool
An introductory article to Neo4j
Neo4j is an open source NoSQL graph database. It can be up to 100 000 times faster than a relational database in certain circumstances.
The theory
The theory is that you have a bunch of nodes, and then you create links between each node (Relationships) and on these relationships you can store properties and values (Key-value pairs).
A use case for this could be that you have four bus stops as shown below. A, B, C and D. What you want to find out is the cheapest way to get from A to D.