MongoDB Crash Course - Schemas and Relationships

Back with another MongoDB Crash Course video. Today we are looking at Data Schemas, Relationships and Schema Validation in MongoDB. These topics are important to know and understand to get started with planning your real world applications. I will be going through different examples in theory as well as showing you how it is done in the Mongo Shell.
Really hope you enjoy this video and if you did give this video a THUMBS UP and SUBSCRIBER 🤓🔥 for more content just like this.
MongoDB Topics Docs:
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docs.mongodb.com/manual/core/...
docs.mongodb.com/manual/appli...
docs.mongodb.com/manual/core/...
KZbin Series Playlist:
========================
• MongoDB Crash Course
Timestamps:
============
0:00 Intro
0:40 What is a Schema
2:28 Different Schema Approaches
5:25 Looking at Data Types
7:57 Data Type in Action
14:22 Different Relationship Types
16:30 Embedded Example 1
17:47 Reference Example 1
21:04 Embedded Example 2
21:48 Reference Example 2
26:29 Merging with $lookup example
32:13 Talk about when to use which relationship type
34:55 What is Schema Validation
35:50 How to add Schema Validation
46:00 Outro
My personal website
=================
www.thefullstackjunkie.com

[@the_full_stack_junkie]

Github Link to Schema Validation: github.com/LloydJanseVanRensburg/SchemaValidationFiles/tree/master

[@andreydenisov1451]

thank you, man! The best MongoDB explanations on KZbin

[@jamiroquaiordie]

great way of teaching. your explanations really help me

[@hemsblr]

Your teaching skill is very exceptional, liked and subscribed, keep posting and sharing.

[@MrKrzysztof13]

All of your videos have been great so far. Would love to see one on Rest with json using node + react but not complaining lol. Thank you so much!

[@the_full_stack_junkie]

I do have other videos on my channel where i do what you are looking for enjoy thanks fir the comment🤘🤓

[@adityasagar206]

Thank you so much. I was struggling with learning reference approach but you made it completely clear to me.

[@SanjayKumar-un7xf]

Really excellent expatiation 👍

[@h_nooh7390]

Awesome, thanks

[@kaybeek6417]

It's perfect!

[@okoiful]

great decision to use the terminal which has no color highlighting or anything to make it more readable 👍

[@AnkitBhardwajjgd]

thanks

[@chess4964]

Aiming to be a full stack dev like you !

[@Vlad-us9xt]

top!!!

[@jaggyjut]

wow a full crash course. Thanks. Could you create a tutorial on how to handle an update across two or more collections using a single query. For example if we have a users and posts collection and if we update the username in the users collections, the username in the posts collection should also get updated.

[@mohdhasib305]

hey i am stuck in same problem. did you resolve it?. If yes, please share link of the tutorial here.

[@bruh8731]

gold

[@therodri595]

Excelent video , can you try to do more complex and advance agreggations ?

[@the_full_stack_junkie]

Will definitely look into this thanks for the comment!

[@mbm6048]

Wow such an excellent video everything was well explained and I learned alot, instantly subscribed. Are you from south africa you've got the cape town accent

[@the_full_stack_junkie]

Hey champ, jip I am from SA🇿🇦

[@mbm6048]

@@the_full_stack_junkie Cool I'm from Durban. Keep it up man

[@emanuelmaricic9657]

Hello bro, how to create a user-users data relationship on MongoDB? In my example, I have users and articles. I want to be able to give every user permission to add article and list and update all his added articles. How do I connect those?

[@mdmohiuddin3141]

i should have find this video earlier :))

[@ayeshazahid2421]

thank you so much for this video, I was looking for $loopups and how ref relation works and you solved my issue. but I have a question, can you suggest to me which approach I should need to use for a money wallet like every user have a wallet, so should I link users with the ref approach or embedded approach??

[@the_full_stack_junkie]

Hey man so basically this is whete mongodb shines there isnt really a right or wrong approach to your problem. But again i dont really know how the wallet works if it record only a balance then embedded should work fine. If you save transaction details then go for ref approach

[@ayeshazahid2421]

@@the_full_stack_junkie thank you soo much , i didn't expect to get reply so fast

[@the_full_stack_junkie]

All good champ, I had little time on my hands💪🤓

[@ayeshazahid2421]

@@the_full_stack_junkie hello sir I have one more question, can you tell me what the difference between $lookup and .populate(). if we take your example then can we use .populate() too?? and which one best Thanks in advance

[@the_full_stack_junkie]

The $lookup is if you want to use the native mongodb driver aggregation api. And populate is a built in mongoose method that does the same but you are using mongoose implementation

[@frenchmike]

newbie question. I see organizations and projects in mongodb, then of course databases in projects etc. If I create a new web application for instance and I call it "workoutApp", do I create a new project named "workoutApp" and place all my db in my project or do I create and organization named 'workoutApp". in which case would I create a new organization ?? thanks

[@the_full_stack_junkie]

Hey man so this is personal preference. I would do it as creating a organization for production apps and one for development apps. This is just my way of organizing my mongo atlas instances.

[@frenchmike]

@@the_full_stack_junkie thanks

[@groundtouche]

Quick question, why would I ever have Item referenced in sales with its price. The Item price would change eventually.. what do you suggest?

[@kevgits]

Are the same functionalities available in Mongoose?

[@the_full_stack_junkie]

Yes you can write vanilla Mongo Query Language in mongoose they do allow it yes.

[@juleswinnfield9931]

Can't miss a fellow South African accent 😉

[@the_full_stack_junkie]

🇿🇦

[@juleswinnfield9931]

@@the_full_stack_junkie whoops just realised I spelled it wrong.

[@vadapallichaitu8799]

is there a validaor generator online, writing all this code is time taking mess

[@pavanilla4374]

😎😎

[@the_full_stack_junkie]

Hope this is helpful, will be uploading next 3 sections in this week.

[@pavanilla4374]

@@the_full_stack_junkie very much excited Noted ❤❤

[@KeithWhittingham]

What ever happened to 3NF?..

[@the_full_stack_junkie]

You can still normalize your data in the same way you would with SQL databases.

[@math-6401]

you'r beautiful ! 3

[@kyleoliver8142]

Hi Lloyd, can I contact you via email, or do you prefer using your KZbin channel?

[@the_full_stack_junkie]

www.thefullstackjunkie.com Shoot me an email

[@animania3618]

may I know how you query and populate the items:[], you didn't show how to lookup and populate the items with array of objects 🥹