#16 Relations in MongoDB | Fundamentals of MongoDB | Complete MongoDB Course 2022

[@milandash-mg4gh]

most important video...

[@sharathkk1807]

amazing explanation 🤝

[@bandi642]

in references, how does costumer know that id put in the purchases list is from the product collection? or does that id need to be unique from across all collections in the database?

[@snehaljagtap]

Thanks for the swift explanation.

[@noormuhammad888]

Question: What if the quantity of a purchased product is more than one. How can the reference way of creating document handles such case?

[@user4678-c9x]

Probably by storing an object in the array instead of just an id. For example { “quantity”: 4, “itemid”,”19768hdi65”}

[@user4678-c9x]

Or even better turn the array into an object and do products: { “itemid”: { itemid: “itemid”, quantity:4}}. Then you can refer to user.products[itemid].Quantity to get quantity and and that.itemid to get the id

[@salmanmohammad4706]

Great explanation ❤🔥😊

[@augustocastro376]

Amazing video

[@archuser532]

nicely explained

[@samyamtimsina]

thanks

[@MicheleHjorleifsson]

That is bad design, you never want that reference to be potentially infinite. Better to have an orders collection that contains the Customer identifier and the list of products under an order id

[@southredmondtoxik1885]

❤

[@Pareshbpatel]

{2023-08-23}

[@75snambi]

Both are wrong approaches though.