Graph technology, invented by Leonhard Euler, is a fundamental field in mathematics and computer science that has been powering innovative tech for over 280 years. It is based on the concept of graphs, which are data structures composed of nodes and relationships between them. Graph databases are online systems capable of storing and managing graph data models, with two key properties: native graph storage and graph processing engines. There are three types of graph databases: property graphs, hypergraphs, and triple stores, each with its strengths and weaknesses. Property graphs are the most widely used type, suitable for rapid traversal of data connections, while hypergraphs excel at capturing meta-intent and RDF triple stores are proficient in offline analytics. Understanding these differences is crucial to choosing the right graph technology for specific applications.