An introduction to graph databases. From graph theory, through the history of computing and how it affected database design, to why relational databases aren't about relations. Next, a look how diverse is the current graph database market and what obvious and not so obvious problems are solved by graphs. A short introduction to Neo4j's query language, Cypher, will show the main concepts of querying graph data. Then, by use of the same datasets in both relational and graph databases will compare syntax clarity and database performance.