Schema validation (query operators)

db.createCollection("publishers", {
	validator: {
		$and: [
			{ name: { $type: "string" } },
			{ $and: [ { email_address: { $exists: true } }, { email_address: { $type: "string" } } ] },
			{ status: { $in: [ 1, 0 ] } },
			{ $and: [ { created_at: { $exists: true } }, { created_at: { $type: "int" } } ] }
		]
	}
})