advertisement-schema.json

{
	"$id": "http://example.com/quiz",
	"type": "object",
	"$schema": "http://json-schema.org/draft-07/schema#",
	"definitions": {
		
		"sponsor": {
			"properties": {
				"id" : { "type": "integer" },
				"description": { "type": [ "string", "null" ] },
				"url" : { "type": [ "string", "null" ], "format": "uri" },
				"media" : { "type": [ "array", "null" ],
					"items": { "$ref": "http://example.com/common#/definitions/media" } }
					},
			"additionalProperties" : false,
			"required" : [ "name", "description", "url", "media" ]
		},

		"campaign": {
			"type": "object",
			"properties": {
				"id" : { "type": "integer" },
				"campaignName" : { "type": "string" },
				"sponsor" : { "type": [ "object", "null" ], 
						"default": null,
						"$ref": "#/definitions/sponsor" 
						},
				"media" : { "type": [ "array", "null" ],
						"items": { "$ref": "http://example.com/common#/definitions/media" } }
					},
			"additionalProperties" : false,
			"required" : [ "id", "campaignName", "endDate", "sponsor", "media"]
		}
	}
}