courses:semint:lab

Beyond the Semantic Web

Last verification: 20260126
Tools required for this lab:
- Neo4j Sandbox (for playing with Cypher)
- The Countries playground (for playing with GraphQL)

Beyond the Semantic Web lecture – part about Cypher and GraphQL (slides are on the main page)

We will explore the Movie Graph! with the Neo4j tools. First of all, follow one of the following links to create your own Movie Graph instance (there is a need to create an account):
- https://sandbox.neo4j.com/ (3-10 days projects)
- https://console.neo4j.io/ (1 small graph for free)
If you are using sandbox, the Movie Graph is already loaded.
- If you are starting with blank project, first load the Movie Graph by putting :play movie-graph in the neo4j console
Then explore the graph by creating the following queries in Cypher. If you need some help, take a look at the documentation.

First of all, run the query from the lecture:
```
{
  country(code: "PL") {
    name
    native
    capital
    currency
    languages {
      code
      name
    }
  }
}
```
- Do you understand it?
- Do you know how to get the data about Germany instead of Poland?
- If you need some help, use the docs: Introduction to GraphQL, Queries and Mutations
But wait, how do one find out which fields are available in the dataset?
- Use the Introspection to query the schema to get the information about possible values for Country class!

If you want to get to know the Cypher language better, check out this tutorial, which introduces a lot more elements of the language using the Game of Thrones graph as an example!
- To start the tutorial, simply enter :play https://guides.neo4j.com/got_wwc in neo4j console

Docs:
- Cypher documentation
- Cypher cheat-sheet
Tutorials:
- neo4j-got – to start it, enter :play https://guides.neo4j.com/got_wwc in neo4j console
- Analyzing the Graph of Thrones – to start it, enter :play https://guides.neo4j.com/got in neo4j console