Question

I am a java programmer and I want to use MongoDB in my project. I know that MongoDB is a document database but is there any way to store more fields for a record in this db ?

For example I have a table with 4 attributes (i.e. columns) name address age and dob so can I use or convert this structure to fit into MongoDB ?

Answer 1

Of course.

MongoDB is a document-based database management system. If you are familiar with the JSON format, Mongo stores data in a very similar manner. For example, a sample document in a Mongo database may look like this:

Person {
    Name:
    {
       First : "John"
       Last : "Smith"
    }
    Address :
    {
       City : "Chicago"
       State : "Illinois"
       Street : "30 S. Michigan Avenue"
    }
} 

As you can see Mongo supports nested fields, so a particular field can contain one or more attributes. It is not key/value per se, as it is possible to nest document ad infinitum. Beware, however, that not all documents in a collection have to have the same structure. This is Mongo’s biggest strength, but it can turn around and bite you if you’re not careful.