What is a Foreign Key Constraint? Understanding Primary & Foreign Keys

[@maysa7491]

wow u saved me a lot of time

[@cockroachdb]

And you just made my day with this comment.

[@charleswaema124]

Best explanation on the internet

[@morriskeller]

Perfect explanation. No Bloatware!

[@msingh5581]

Best lecture to clear key confusions arising from definitions.

[@hristohristov8283]

Very well explained and clearly illustrated. And I mean it!

[@cockroachdb]

Thank you Hristo!

[@sergiibritannica8957]

Clear and helpful, thanks!

[@DawgShawg]

Great Video! Thank you so much for this. I had been struggling to understand this concept for a while, but you explained it so well

[@Maria-n5g1l]

Thank you for such a comprehensive way of presenting the information!

[@cockroachdb]

Glad it was helpful!

[@mem0e731]

Amazing Video, Amazing Explanation. Thanks

[@purpledragon9413]

Thank you! I couldn't understand this concept from the Coursera course I'm taking. Your video effectively cleared my confusion!

[@cockroachdb]

We're so glad to hear that this video helped clear your confusion.

[@junghabaek2046]

The best video. Thank you!

[@2000rira]

Well explained , Impressive illustrated 🤝Good job

[@cockroachdb]

🤝 Thanks Ali!

[@bradleyli1569]

Concise and comprehensive explanation! Thanks very much!

[@cockroachdb]

We're happy to hear that it helped!

[@shukes4645]

it took me at least 30 minutes to find an understanding video. That doesn't have an overly thick uninteresting indian guy making 0 sense. And i finally found someone who explains it in under 10 minutes and is short, simple and awesome. Thank you very much

[@ahhindeed]

great explanation, thank you!

[@codewithnacho]

Awesome video! Thanks for sharing

[@rafco90]

Excellent explanation!

[@timdavis8951]

Clear, basic, thanks!

[@cockroachdb]

Thanks for watching Tim. Let us know if there are other concepts that you think would be helpful to learn about in this format.

[@heberrepiso2836]

Excelllent video.

[@cockroachdb]

Thank you Heber!

[@shenshaw5345]

Really great explantion

[@cockroachdb]

Thanks for watching ShenShaw!

[@igorg.8624]

Is there a way to use this concept to avoid duplicating data across tables? For example - there is an Orders table and a MyOrders table. I'd like MyOrders table to automatically reference Orders without duplicating the data in it....

[@Sidra--]

Thank you so much!

[@Necromanteion]

great video

[@jesperhjholdt7871]

Thank you!'

[@cockroachdb]

Our pleasure Jesper!

[@senju31]

So it's not possible to insert data only into a parent table without having an error?

[@-.-_._--]

Great but is it also possible that a column is both a primary key and foreign key in the same table

[@gdejandespotovic]

tnx

[@abrahamhahijary]

Clear and helpful, thanks!