🦸 Simplify the books array in the authors collection

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Extra activity! Do it if you have extra time or are following along at home. It won't be covered during the hands-on lab.

We want to modify the authors collection so the array of books include just the bookId.

• On the MongoDB diagram view, click the authors collection.
• On the relational mappings list on the right, click on the edit icon of author_book.
• Edit the field name from authorBooks to just books.
• In the list of fields, uncheck authorId, leaving bookId checked.
• In the mapping rule's advanced settings, Check create array of primitive values.
• Click Save and close.