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View m101n-final-q07.js
/*
FINAL: QUESTION 7
You have been tasked to cleanup a photo-sharing database. The database consists of two collections, albums, and images. Every image is supposed to be in an album, but there are orphan images that appear in no album. Here are some example documents (not from the collections you will be downloading).
> db.albums.findOne()
{
"_id" : 67
"images" : [
4745,
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