MongoDB preferred schema for embedded collections. documents vs. arrays

Question

I believe there at least two ways to have embedded data in a mongodb document. In a simplified case we could have something like this:

{
    \'name\' : \'bill\',         


        

Answer 1

Today we have $eleMatch operator to achieve this, as discussed here - Retrieve only the queried element in an object array in MongoDB collection

But this question poses some interesting design choices, which I am also struggling to make today. What should be the preferred choice from given two options if frequent CRUD is required in embedded documents?

I found, it is easy to perform CRUD with new $set/$unset operators, on embedded documents, when ID s used as property names. And if client can get hold of ID to make edits, it is better than array, IMO. Here is another useful blogpost by Mongodb about schema design and making these design decisions

http://blog.mongodb.org/post/87200945828/6-rules-of-thumb-for-mongodb-schema-design-part-1