Entity Mapping | @OneToOne, @OneToMany, @JoinColumn| Spring Data JPA | Spring Boot | Dev2Prod Coding

This video will focus on Entity Mapping in Spring Data JPA basic concept. Example to demonstrate use of @OneToOne, @OneToMany, @JoinColumn using Spring Boot.
Github:
github.com/Dev2ProdCoding/spr...
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Dev2Prod Coding

[@jaymichalek1693]

Awesome explanation. I hope you can make more videos.

[@gauravsrivastava17]

Short and to the point 🔥🔥🔥🔥

[@siyansunny3090]

Good explanation.. waiting for next video...

[@ushasharma2631]

Just because of your perfect solution and exact explanation instead of keeping it long you made it short. I am subscribing your channel. Good Efforts thank you :)

[@dev2prodcoding]

Thanks and welcome

[@virendrasingh-en1yy]

nice explanation clear my all doubts with in short time thankyou so much

[@harishchandra8057]

Nice explanation sir..

[@karthickdk9313]

thank u so much.. upload more videos .. based on entity

[@indranilganguly4750]

Great Video...Helped me a lot..Thanks

[@wantedlepota9960]

I like the fact that you have already created the classes(entity, controllers) before you record the video, which makes the video simple and short

[@dev2prodcoding]

Thanks

[@abhiramnair2195]

nice video..cleared all my doubts.thank you

[@janstefangehrmann1139]

Thank you so much. Now I understand how to handle relations :)

[@tonycavanagh1929]

Brilliant, well presented and consice.

[@dev2prodcoding]

Thank you👍

[@manideepkumar959]

Bro, in address class , during 1-1 7:59 before and after using @OneToOne(mppedby="address") the output/table structure of address is same na, then can u tell me what is the use of that annotation

[@swadeshswaroopbehera8465]

great explanation. keep up the good work.

[@dev2prodcoding]

Thanks!

[@kosalamail9863]

Perfect Explanation. Thanks

[@dev2prodcoding]

Glad it was helpful!

[@neerajayarasani8456]

short and clear. Thank you

[@dev2prodcoding]

Glad it was helpful!

[@jitendrapatil3276]

Great Video. Just subscribed....

[@jakub.686]

Thank You for this video, it helped me a lot

[@zuberdiwan8123]

Very Good Explained..Thank You.....

[@dev2prodcoding]

Glad it was helpful!

[@shaharukhshaikh4676]

No one beat this content on UA-cam thnks bro🎉

[@dev2prodcoding]

Glad you enjoy it!

[@thirumalyadav7509]

Best explanation bro

[@m_sharif]

Just to the point.. Thank you.

[@dev2prodcoding]

I am Glad you like it. Thanks!

[@samnayakawadi]

Subscribed. Thanks.

[@sproutboot]

I might sound stupid but I found it interesting that f.k @OneToOne private Address address, Employee class has a attribute of address which data type is Address, and it actually stores int value which is addressID? and by setting cascade.all, when we send request payload for saving emps, it will affect Address class and save address info on Address table. And the fk column in emp table will show just int value(AddrID). I learned a lot. and I hope I understand correctly. Thanks!

[@HusnainAshfaq-kr5or]

good

[@hrishikeshmukherjee8988]

wow

[@suthar_ravi]

Great explanation 👌🏻😇

[@dev2prodcoding]

Glad you liked it!

[@harishchandra8057]

plz upload the next part ...onetomany bidirectional and manytomany

[@kirindev]

thank you

[@Emanuel-yb3qk]

Thanks for explaning it too easy bro. Greetings from Mexico.

[@dev2prodcoding]

Glad it helped..Happy Learning!

[@siddhantrakesh1245]

​@@dev2prodcoding bro i have one doubt

[@connect2soumen]

Neat and clean video.

[@dev2prodcoding]

Glad you liked it!

[@Rasmusorum]

How does it make sense to make a @onetoone relationship? Why not just embed the class?

[@Doum4n]

Thank you very much

[@dev2prodcoding]

You are welcome

[@ash416]

Hello bro please reply
I have to separate entities flight and airport and I don't want to save the data for airport while saving flight,since airport table is already populated
Hope it make sense

[@forinda]

Perfect explanation😊

[@dev2prodcoding]

Thank you! 😃

[@HimanshuVerma-ko7vr]

very helpful

[@dev2prodcoding]

Glad to hear that

[@kotidinta1585]

Bro nice explaination. Could please make video on total spring project

[@dev2prodcoding]

Sure

[@user-zl9ub5hq4v]

Thank u!

[@dev2prodcoding]

Thanks..

[@user-hm2mk1ql3l]

So good explained! Just one question, first OneToOne Example, in Entity Employee_Detail you add Address address, which created automatically a FK fk_add_id, should a index be created to that fk_add_id, if data volumn is very big? Thank you!

[@HuieChannel]

bro these indians are hella clutch

[@weixiangng8279]

How to implement it with Angular though?

[@atharvsingh6901]

Much appreciated dude🙂🙏

[@dev2prodcoding]

Thanks...Happy to help

[@pranshugautam8890]

I want to ask one q : when you used unidirectional you have not written one to one in address class and when you showed bidirectional then you write one-to-one in address class but there was no difference in output that you showed so why we have to write one-to-one in address class when there is no difference in output?

[@donDan94]

yeah right, I just watched the video and had the same question. Can I ask you, did you find any information about this, is there any difference? cheers!

[@simon8284]

Sex bro Sex, even I couldn't understand this from Java Brains, Be Coder, and Code With Durgesh. You made a flawless victory...

[@dev2prodcoding]

Thank You!!

[@sonubandigi3788]

bro dhanyawad

[@dev2prodcoding]

Thank You!!

[@venkateshejjigiri-4137]

fk_add_id is not reflecting in employee table. and no data in adreess table. pls help me

[@surajdevrajak9267]

Good work man

[@dev2prodcoding]

Thank you!

[@Leo-fi6bg]

Hi bro .. how to configure my slq or post man in application properties.. will u please solve that

[@dev2prodcoding]

ua-cam.com/video/3wIRc94piU8/v-deo.html please check this video where I have explained how to configure DB using application.properties file.
Code Link - > github.com/Dev2ProdCoding/spring-data-jpa-springboot/blob/master/src/main/resources/application.properties

[@ayushkumarjajodia8828]

what will be the difference in table structure b/w uni and bi direction of one to one mapping?

[@dev2prodcoding]

There will be no difference.

[@SKMishra2023]

8:12

[@KlanBr1]

if i duplicate my request in postman, so duplicate my entities, that not shoul be happen, because then i have duplicate employees and addresses, how do yo stop this behavior, you put some logical in your service?(sorry for my english)

[@sachithnanayakkara4027]

How about One to Many & Many to One Mapping and also many to many mapping? Can you make a video for that

[@dev2prodcoding]

ua-cam.com/video/v40e5SOMftQ/v-deo.html

[@ankushkamble911]

Great Explanation bro...but one error is occuring actually when we run many to one first time it will save the data but if we add another member of same addresse it will update the data...that means fk_emp_id 1 will replace by 2 so...what to do plz help me

[@dev2prodcoding]

Can you post your employee and address entity here for one to many mapping?

[@wellingtonjr.9501]

nice video!! +1 sub, thanks

[@dev2prodcoding]

Thanks for the sub!

[@roshanpawar571]

Nice video..... but how to update mapping data

[@dev2prodcoding]

Thanks @roshan....I am assuming by update mapping data you mean updating records in db. For updating you can use same method you used to save it i.e saveAll() or save().
Let me know in case of any other query.

[@dod-do-or-dont]

Why 90% od tutorials are low quality indian ones?

[@siddhantrakesh1245]

Bro i have one doubt

[@vinaymathapati4077]

Where is properties file

[@dev2prodcoding]

github.com/Dev2ProdCoding/spring-data-jpa-mappings/tree/master/src/main/resources

[@kandruvinay6736]

Push the file to git

[@dev2prodcoding]

url : github.com/Dev2ProdCoding/spring-data-jpa-mappings.git

[@tobyhamilton2153]

You didn't even show how to right at the get mapping, so you just showed how to do the annotations, how is someone meant to known how to make the get request!!!

[@venu5791]

can you add @jsonbackReference, @jsonmanagedreference along with the mappings

[@nguyenquangtinh4911]

thank you

[@dev2prodcoding]

Welcome!