Example dataset

The example dataset used throughout these docs contains movie data. Load it to try the queries and explore the graph.

Prerequisites

You have connected to a NebulaGraph Database Developer Edition service group with ngql, as described in the Connect and run your first query.

Dataset introduction

The example dataset is a knowledge graph dataset for movie recommendation. The following figure shows the entities and relationships in the knowledge graph:

Figure 1: Entities and relationships in the knowledge graph

To implement the dataset in GQL, the following node types and edge types are introduced:

Node type name	Label	Property	Primary key
User	Person	id	id
Actor	Person	id, name, and birthDate	id
Director	Person	id, name, and birthDate	id
Movie	Movie	id and name	id
Genre	Genre	id and name	id

Table 1: Node types in the dataset

Edge type name	Label	Property	Source node type name	Destination node type name
Watch	Watch	rate	User	Movie
Act	Act	None	Actor	Movie
Direct	Direct	None	Director	Movie
WithGenre	WithGenre	None	Movie	Genre

Table 2: Edge types in the dataset

The following figure shows the graph model of the dataset in a tabular format:

Figure 2: Graph model of dataset

Load the dataset in NebulaGraph Database Developer Edition

1. Run the following command in ngql to load the dataset:

   :play movie
   

2. To verify that the dataset is loaded successfully, run the following statement to show graphs:

   SHOW GRAPHS
   

   Return:

   +----------+------------+-----------------+-------+
   | name     | graph_type | schema          | owner |
   +----------+------------+-----------------+-------+
   | movie    | movie_type | /default_schema | root  |
   +----------+------------+-----------------+-------+
   

Download the dataset files

To obtain the original dataset files, click here to download the complete dataset files in CSV format.