Query the Northwind Database as a Graph Using Gremlin

The text discusses the use of Gremlin, a graph traversal language, in querying graph databases. It introduces "SQL2Gremlin" (http://sql2gremlin.com), a website that demonstrates how to produce similar results using SQL and Gremlin. The author provides three examples from the site: a simple filter-based query, a traversal of relationships without joins, and a recommendation query. The text also mentions DataStax's commitment to graph computing through its acquisition of Aurelius and its involvement in the Apache TinkerPop project.