Design a schema¶
To manipulate graph data in Nebula Graph with Studio, you must have a graph schema. This article introduces how to design a graph schema for Nebula Graph.
A graph schema for Nebula Graph must have these essential elements:
- Tags (namely vertex types) and their properties.
- Edge types and their properties.
In this article, you can install the sample data set basketballplayer and use it to explore a pre-designed schema.
This table gives all the essential elements of the schema.
| Element | Name | Property name (Data type) | Description |
|---|---|---|---|
| Tag | player | - name (string) - age (int) |
Represents the player. |
| Tag | team | - name (string) |
Represents the team. |
| Edge type | serve | - start_year (int) - end_year (int) |
Represent the players behavior. This behavior connects the player to the team, and the direction is from player to team. |
| Edge type | follow | - degree (int) |
Represent the players behavior. This behavior connects the player to the player, and the direction is from a player to a player. |
This figure shows the relationship (serve/follow) between a player and a team.
Last update: September 3, 2021