Mongo Db runs based on (Key, Values)

For Mac
Onde downloaded:
in the terminal run these commands:
from the root directory run
`sudo mkdir data`
`cd` in to the data directory
`sudo mkdir db`
Mongo requires these folder to run

the next step is to find the mongo Db file:
/Users/$USER/Desktop/mongodb-osx-x86_64-4.0.10/bin/mongod
go to the `bin` folder.
run the mongod file then the mongo file, these will launch a local instants of mongo db
the other will open the mongo db CLI.

*** If you encounter a 100 error, this means that the DB does not have write access to the data/db directory
its a simple fix of giving it access

`sudo chmod -R go+w data/db/`

now rerun the commands

Commands:

once mongo is running in a terminal
you can run `cls` which clears the terminal window.

To build or access an existing database
`use someDb`

If the DB doesn't exist Mongo will create it and switch you to that db

all mongo commands run inside of the DB will require
`db` to be run then the database name `db.someDoc`

`db.some.insertOne()` format the input like a JSON you can keep recreating the same thing.

`db.some.insertOne({name:"Joe", age"23", userName:"JoeyJoe"})`
*It is easier to do this in a IDE, but make sure whenb you copy in back over you have vertical quotation marks
* other wise you will get a syntax error

`db.some.find()` this will return all of the entries in the db
`db.som.find({name: "Joe"})` if you pass in an arguement it will return only those Documents whoes name contains "Joe"
The find is CASE SENSENTIVE if one entry is "Joe" and the other is "joe" only "Joe" will be returned

if you want to update a document you can simply do it by
db.some.update({_id: "1"},{$set:{email: "joe@email.com}})

you can also update and $unset it
db.people.update({_id: "1"},{$unset:{age: "does not matter"}})

count `db.some.find().count`

Kotlin and mongoDb:
connecting to a mongoDb you will need to add the dependcies to Maven or Gradle
rebuild the DM
create a mongo driver file in your project

`val mongoClient = MongoClient("127.0.0.0", 27017)`
you will want to connect a new instance of the mongo client, pass in the arguements ("Host string", port Int)
these can be found on the mongod in the terminal.