The https://github.com/couchbaselabs/try-cb-dotnet/tree/HEAD/try-cb-dotnet directory contains the Startup.cs entrypoint, and various Models and Controllers which contain functions for handling users, registration, and SQL++ (formerly NIQL) queries.

For this quickstart, we use three collections, airport, airline and routes that contain sample airports, airlines and airline routes respectively. The routes collection connects the airports and airlines as seen in the figure below. We use these connections in the quickstart to generate airports that are directly connected and airlines connecting to a destination airport. Note that these are just examples to highlight how you can use SQL++ queries to join the collections.

You can explore the REST API here in read-only mode, or once you are running the application, at the /apidocs endpoint.