MongoDB querying and CRUD operations
After all this setting up, downloading, and installing, it is finally time to see MongoDB in action and try to get what all the fuss is about. In this section, we will show, through some simple examples, the most essential MongoDB commands. Though simple, these methods will enable us, the developers, to take control of our data, create new documents, query documents by using different criteria and conditions, perform simple and more complex aggregations, and output data in various forms. You might say that the real fun begins here!
Although we will be talking to MongoDB through our Python drivers (Motor and PyMongo), we believe that it is better to learn how to write queries directly. We will begin by querying the data that we have imported, as we believe that it is a more realistic scenario than just starting to make up artificial data, then we will go through the process of creating new data – inserting, updating, and so on. Let’...
