MongoDB can very naturally store unstructured data using the JSON syntax. In this recipe, we will store a list of people to MongoDB.
We must first install MongoDB on our machine. The installation files can be downloaded from http://www.mongodb.org.
We need to make a directory for the database using the following command:
$ mkdir ~/db
Finally, start the MongoDB daemon on that directory using the following command:
$ mongod –dbpath ~/db
Install the MongoDB package from cabal using the following command:
$ cabal install mongoDB
Create a new file called Main.hs and perform the following steps:
Import the libraries as follows:
{-# LANGUAGE OverloadedStrings, ExtendedDefaultRules #-} import Database.MongoDB import Control.Monad.Trans (liftIO)Define a data type for the names of people as follows:
data Person = Person { first :: String , last :: String }Set up a couple of data items we wish to store as follows:
myData :...