MongoDB has its own commands and function structures to ask the database to do work. In this talk, we will discuss how queries, updates, deletes and inserts work. However, we will go beyond these actions and also review what operators you should and shouldn’t use, and how they might actually drive your schema choices. Then we will talk about operationally sound ways for bulk deleting and inserting when you want to limit the impact on production (if other tools might be too aggressive).