How to Design a Database

[@DatabaseStar]

Want to improve your database design skills? Get my Database Design project Guides here (diagrams, explanations, and SQL scripts): www.databasestar.com/dbdesign/?

[@ayomideashiru554]

This is one of the best straight-to-the-point videos on designing databases on KZbin!!! Amazing!!!

[@DatabaseStar]

Wow, thanks! Glad you liked the video and found it helpful!

[@nicholassmith6412]

Videos like this are way more useful than the other bog standard stuff that litters the web - rather than over-explaining 'how to query a, b, c, d and e', your videos cover the more important fundamentals like how to design relational databases properly. The querying can just be googled as you develop, but leaning how to design a database cannot be googled so easily. Thank you

[@DatabaseStar]

Thanks for the feedback and glad you found this useful!

[@yassinebouchoucha]

most under-rated topic for web developer , keep-up the good work.

[@DatabaseStar]

Thanks!

[@antonignatenko7776]

that's just exactly what i needed. tons of questions answered. God bless you.

[@DatabaseStar]

Glad you found it helpful!

[@冉-q2u]

I like your video. I have been studying databases for some time, and I've come across tutorial project videos on KZbin. This is one of the best videos on designing databases on KZbin!!!

[@DatabaseStar]

Glad it was helpful!

[@tech-systemdesign8891]

The best channel to learn db design, thank you so much!

[@DatabaseStar]

Thanks!

[@MohammadNasim-p2b]

This amazing brother. No one is talking about these types of fundamental topics. This video is so helpful. Keep up good work.

[@DatabaseStar]

Thanks, glad you like it!

[@ravindrawaghela9072]

One of the best video . Very lucid to understand. ! Thank you from bottom of my heart. :)

[@DatabaseStar]

Thanks, I’m glad you liked it!

[@tech-systemdesign8891]

OMG, finally, your videos are so helpful, I was looking for a while. Thank you so much!!

[@DatabaseStar]

Glad you like them!

[@db5094]

Thanks needed this for an assignment!

[@DatabaseStar]

Glad it was helpful!

[@srourganoush5941]

You deserve more likes and subscribers

[@DatabaseStar]

Thanks!

[@czhablog9559]

Wow what an amazing explanation!!!

[@DatabaseStar]

Glad it was helpful!

[@piccell244]

I‘m starting out right now and this video is really helping, thanks a lot

[@DatabaseStar]

No problem, glad to hear this video is helpful!

[@yoseees5493]

This video was incredible! Thank you so much!

[@DatabaseStar]

You're so welcome!

[@Spkntei]

Good teacher ❤

[@DatabaseStar]

Thanks!

[@-.-smile]

Ben your videos are amazing!

[@DatabaseStar]

Thanks!

[@samfreitag729]

Wow! Super helpful video man. I wish I started here first....

[@DatabaseStar]

Glad it was helpful!

[@porobertdev]

Extremely helpful!

[@DatabaseStar]

Glad to hear it!

[@luciusrex]

i love this thanks!

[@DatabaseStar]

You’re welcome

[@riccardolacamera]

your video was absolutely helpful compared to class lectures about database management, do you have anything on how to design (even with pen and paper) other kind of relationship between tables? Thanks a lot!

[@DatabaseStar]

Thanks! I've got a couple of videos on my channel about many to many relationships, and one to many relationships. I've also got quite a few examples of designing a database, such as AirBNB or Instagram or school management.

[@trishulcurtis1810]

Excellent Video!

[@DatabaseStar]

Thank you very much!

[@mastermindrational1907]

This was helpful, although I have a massive database I’m planning. Maybe I will need to break it down into small chunks as I go?

[@DatabaseStar]

Thanks! Yeah breaking it down will be helpful

[@AnneLopezlovesLife]

This is exactly what i need right now :)

[@DatabaseStar]

Glad it was helpful!

[@simondolapo1567]

Great video...I absolutely loved it... You're doing a great job...

[@DatabaseStar]

Thank you so much!

[@simondolapo1567]

@@DatabaseStar You're welcome...Words can't express how happy I felt when j went through some of your database videos...They were so helpful. Good job sir🙌

[@natkhat19jay]

Awesome sir love from india

[@DatabaseStar]

Thanks!

[@hafedgabroun3242]

Keep up the good work! 👍

[@DatabaseStar]

Thanks!

[@SonAyoD]

Great video

[@DatabaseStar]

Thanks!

[@abdirahmanali3639]

absolutely amazing, !!!!!

[@DatabaseStar]

Thanks!

[@pawegagorowski4410]

Great video!!

[@DatabaseStar]

Thanks!

[@yahayahudu1745]

You are really amazing, thanks 😊

[@DatabaseStar]

Thanks!

[@appstuff6565]

Hi there, thanks for this! I was wondering how we can do with multiple patients at the same time, perhaps create a separate table of patients and how will we identify other patients from that table list?

[@DatabaseStar]

Glad it helped! Yes, you would have a separate table in between patients and appointments to store the patients for each appointment, as it is now a "many to many" relationship.

[@tejassharma2006]

Thanks man.

[@DatabaseStar]

No problem!

[@smilingcookie1672]

Great video

[@DatabaseStar]

Thanks!

[@debrain1647]

Hello, nice tutorial.. what software is this? Would like to learn from you.

[@DatabaseStar]

Thanks! The tool I used is called LucidChart.

[@naveenkumarmurugan1962]

Your videos are awesome

[@DatabaseStar]

Thanks!

[@rimshawaqar8073]

have you lectures on oracle apex complete series?

[@DatabaseStar]

Unfortunately I don’t, as I don’t have any experience with apex

[@rimshawaqar8073]

If you know someone good at apex, can you recommend (channel, lectures)

[@abdelrahmanmohamedowis7619]

why u don't do generalisation principle

[@DatabaseStar]

What do you mean by "generalisation principle"?

[@YangNotPractice]

I think it’s called normalization

[@joelklovesmukisa]

plz help share available databases if you dont mind

[@DatabaseStar]

What do you mean by available databases?

[@GenjaOrigins]

I am trying to learn something. Lets say someone gives me some requirements how can i make a DB based on that. Or if have a DB how can i change it if somethng happnes therre must be some rules or theory. Like Pivot tables that connect 2 tables etc

[@DatabaseStar]

This video shows you how to create a database design from an idea or from requirements. I've got a few other examples on how to do this on my channel as well. If you have a database and you need to change something, you would follow the same process. But it may be more complicated as you need to understand what is happening at the moment.

[@GenjaOrigins]

@@DatabaseStar I think i need to Learn about 1-1, 1-N, N-1, N-N and when to use join table "pivot table". I think when 1-1 use foreign keys for everything else pivot table but i don't know how exactly. And i need learn normalization.

[@wesleyong2970]

What software is this?

[@DatabaseStar]

This software is called LucidChart.

[@ViBucks]

GOAT

[@DatabaseStar]

Thanks!

[@lararawf6100]

God bless u

[@DatabaseStar]

Thanks

[@hemanthanagoda8955]

max

[@DatabaseStar]

Glad you like it (I think!)

[@coderlady_]

Hi, Can you make a video about the mapping between tables to avoid teh infinit recursionStachOverflow problems? especially @manytoOne and @OnetoMany in each side of the tables

[@DatabaseStar]

What do you mean by recursionStackOverflow problem? I have a few videos on joining tables that may address it.

[@coderlady_]

@@DatabaseStar I mean when 2 entities have bidirectional relationship: manytoone from 1side and onetomany from the other side, when serializing the 2 entities I get the erro: infinit recursionStackoverflow, I found solutions (like jsonmanagedreference and jsonbackreference) I'm wondering if there is a better way of managing the mapping, I've also read that OneToMany is to be avoid, because the entity loads list of the other one, so it leads to performence issues, is that correct? Thank you

[@DatabaseStar]

Thanks for clarifying. I assume you're using Java, but I'm not that familiar with these errors. A one-to-many database design is very common and is actually a good thing to have in a database. For example, one supplier has many products, one customer has many orders, one social media post has many photos. Regarding the "bidirectional relationship", does this mean that you have two tables, and they have two relationships between the tables (instead of one)?