# Using MongoDb

Install mongodb

• Mac
• Windows
• Linux

Guide to Install

1. Create place to hold database file

Create a folder in your User/Home directory. This way the folder permissions are to you the user and mongodb has read/write permissions. Without those permissions it can't create data.

mkdir -p ~/data/db

2. Run mongodb using the command mongod and the flag -dbpath

e.g. (windows can be a different path)

mongod -p -dbpath ~/data/db/

3. view mongodb in mongodb shell

mongo shell

4. select a database from mongodb

we are going to use the test db

use test

this switches to the test database

5. View collections (tables) in the database 'test'

show collections

Database methods

We will now use some of the simple methods that allow you to make changes to the collections
mongodb collection methods

6. Create a collection in the test database

db.createCollection('people')

when you run 'show collections' now you will see the 'people' collection

7. insert some data into your collection 'people'

NOTE: your are passing in a 'javascript' object, key value pairs into the insert() function using the {} braces

db.people.insert({firstname: 'YOURNAME', lastname: 'YOURLASTNAME'})

8. Look inside your collection and find all the records created in it.

db.foods.find()

This returns the ObjectId for each record, replace ObjectId in the next step

9. Find and delete record the same record in one function

db.foods.findOneAndDelete(ObjectId("5761fc4b639f77271a098f51"))

This will return the removed value in the console for a validation of what was removed.