Exam DP-420 topic 1 question 26 discussion

Selected Answer: D

See, in this kind of questions i think we must assume that the number of items per order can go to infinity. Thus, it would be C. As answer description says: Note: In general, use embedded data models when: There's embedded data that will not grow without bound. We do not see any bound information in this example and we do not know how much data goes with each item - is it 10 key-value pairs? is it 100? 1000? So this can cause our app to hit limits and requires complete re-design and migration.

The solution must minimize the number of requests

Selected Answer: B

D is answer

B. Create a single database that contains a container for orders and a container for order items. Creating a single database with two containers, one for orders and another for order items, is the best approach to support order read operations while minimizing the number of requests. This approach provides a clear separation of concerns between orders and order items, making it easier to manage the data and perform read operations. With this approach, queries that require only order data can be directed to the orders container, while queries that require order item data can be directed to the order items container. This reduces the number of requests required to retrieve the data needed for each query.