Hi, sorry for answering so late. Right indexing improve so much the performance. And you have the "aggregation framework" that is so powerful for complex queries. If you have a concrete doubt, let me know it.
No, no concrete doubts. Also, since I last posted my comment, I've come to peace with the idea that document databases are different, and have their own strengths and weaknesses, just like any other types of databases. :-)
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