Links between documents in MongoDB. How to remove pointers?

Question

MongoDB

There are two documents Price and Product.
Their simplified structure:

Price = {
    name: String,
    id: ObjectId,
    products; [ ObjectID ]  // Массив с id товаров которые есть в этом каталоге
}

Product = {
    name: String,
    id: ObjectId,
    relationToPrice: ObjectId // Указатель на документ Price к которому относится товар
}

What is the best way to make the product removal operation as efficient as possible?
So that when a Product is deleted by its id, the same id is removed from the products array in the Price document.

Answer 1

Why did you separate them? An array with catalog id's could be put into a product, it's not a muscle, after all.