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Graph Algorithms: Examples in Spark and Neo4j
Sample code and tips for over 20 practical algorithms. Find vulnerabilities, detect communities, improve machine learning.Read Now
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What is Neo4j?
Neo4j is a native graph database, built from the ground up to leverage not only data but also data relationships. Neo4j connects data as it’s stored, enabling queries never before imagined, at speeds never thought possible.
The Native Graph Advantage
Unlike traditional databases, which arrange data in rows, columns and tables, Neo4j has a flexible structure defined by stored relationships between data records.
With Neo4j, each data record, or node, stores direct pointers to all the nodes it’s connected to. Because Neo4j is designed around this simple, yet powerful optimization, it performs queries with complex connections orders of magnitude faster, and with more depth, than other databases.Learn More
Cypher — The Graph Query Language
With Neo4j, connections between data are stored – not computed at query time. Cypher is a powerful, graph-optimized query language that understands, and takes advantage of, these stored connections.
When trying to find patterns or insights within data, Cypher queries are often much simpler and easier to write than massive SQL JOINs. Since Neo4j doesn’t have tables, there are no JOINs to worry about. For comparison with SQL, here's a simple Cypher query matching all products in a category hierarchy:
Here's a similar query in SQL, which is longer and more complex. Unlike Cypher, where depth is unlimited, this SQL query selects just three levels of depth.
NODES 2020 Virtual Space: Have a Peek
NODES 2020, on October 20 (pssst… that's tomorrow!), is shaping up to be epic! Along with 70+ presentations from leading graph database experts and multiple talk tracks – all content that's 100% for developers – we're also featuring a Virtual Space for our sponsors to showcase their ...Read More
"GraphTour is something that allows us to think differently. We have one-to-one sessions and we're able to collaborate, but it's nice to come to something like this and see other people and how they're using graph technology," said Paul Westcott, Product Director at Dun & Bradstreet. If company A owns ...Read More
Recently we sat down with the authors of Graph Databases For Dummies, Neo4j Special Edition, Dr. Jim Webber and Rik Van Bruggen. Dr. Webber is Neo4j's Chief Scientist and Mr. Van Bruggen leads the Neo4j sales team in Europe, and has been doing so for eight years. This interview takes a high-level ...Read More