In this recipe, we will get our hands dirty with a bit of querying to select documents from the test data we set up in the previous recipe. There is nothing extravagant in this recipe, and someone well versed with query language basics can skip this recipe comfortably. Others who aren't too comfortable with basic querying or those who want to get a small refresher can continue to read the next section of the recipe. Additionally, this recipe is intended to give a feel of the test data setup from the previous recipe.
To execute simple queries, we need to have a server up and running. A simple single node is what we will need. Refer to the Single node installation of MongoDB recipe in Chapter 1, Installing and Starting the MongoDB Server, to learn how to start the server. The data on which we will be operating needs to be imported into the database. The steps to import the data are given in the previous...