Get an understanding of the MongoDB Aggregation Framework and how to take advantage of indexes to speed up queries.
Learn how to filter elements from arrays in MongoDB by using the $elemMatch operator alongside find(), $match, and the $project and $filter functions.
Part 2 of our MongoDB Users & Roles Explained series walks you through how to enable access control on a three data-bearing node replica set, create the first user making use of the localhost exception, and grant the needed MongoDB roles.
Read Part 1 of our MongoDB Users and Roles Explained series to learn about the basics of MongoDB authentication, authorization, and user and role management.
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