$schema

In JSON Schema, $schema is a string that defines the version of the JSON Schema standard that the schema is written in.

1{
2  "$schema": "https://json-schema.org/draft/2020-12/schema",
3  "type": "string"
4}

In the above example, the schema is written in the JSON Schema draft 2020-12. you can find the latest version of JSON Schema here.

For the tour, we have used the JSON Schema draft 2020-12.

$id

The $id keyword is a string that defines the URI of the schema.

1{
2  "$id": "https://example.com/person",
3  "type": "object",
4  "properties": {
5    "name": {
6      "type": "string"
7    }
8  }
9}

In the above example, the schema is given a URI of https://example.com/person.

The schema URI can be used to reference the schema from other schemas using the $ref keyword.

1{
2  "$ref": "https://example.com/person"
3}

Task

We have defined a simple schema as below.

1{
2  "$id":"https://example.com/string",
3  "type": "string"
4}

Reference this schema in the name property using the $ref keyword in the schema given to you in the side editor.