Let's start with a short but informative tour of MongoDB, which will give you the essential knowledge that you need in order to effectively work with it.
First, let's get a good grasp of how data is organized in a MongoDB instance. This will give us the foundation that is required to understand how storage and retrieval operations work later on.
MongoDB is a NoSQL Database Management System (DBMS). This means that it eschews the traditional table-based data storage model used by SQL-oriented systems such as MySQL, Oracle, and Microsoft SQL Server. Instead, it stores data as documents, which are data structures that are almost identical to standard JSON objects. For example, a MongoDB document can look like this:
{
"_id" : ObjectId("547cb6f109ce675dbffe0da5"),
"name" : "Fleur-De-Lys Pharmacy",
"licenseNumber" : "DL 133",
"address" : "430, Triq Fleur-de-Lys",
"geolocation" : {
"lat" : 35.8938857,
"lng" : 14.46954679999999
},
"postCode" : ...