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

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  • Опубліковано 13 жов 2024

КОМЕНТАРІ • 37

  • @maysa7491
    @maysa7491 2 роки тому +14

    wow
    u saved me a lot of time

    • @cockroachdb
      @cockroachdb  2 роки тому +4

      And you just made my day with this comment.

  • @DawgShawg
    @DawgShawg 4 дні тому

    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

  • @morriskeller
    @morriskeller 2 роки тому +7

    Perfect explanation. No Bloatware!

  • @sergiibritannica8957
    @sergiibritannica8957 2 роки тому +6

    Clear and helpful, thanks!

  • @hristohristov8283
    @hristohristov8283 3 роки тому +4

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

  • @2000rira
    @2000rira 2 роки тому +7

    Well explained , Impressive illustrated 🤝Good job

  • @Maria-n5g1l
    @Maria-n5g1l 2 роки тому +2

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

  • @msingh5581
    @msingh5581 Рік тому +1

    Best lecture to clear key confusions arising from definitions.

  • @junghabaek2046
    @junghabaek2046 2 роки тому +3

    The best video. Thank you!

  • @bradleyli1569
    @bradleyli1569 Рік тому

    Concise and comprehensive explanation! Thanks very much!

    • @cockroachdb
      @cockroachdb  Рік тому

      We're happy to hear that it helped!

  • @purpledragon9413
    @purpledragon9413 Рік тому

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

    • @cockroachdb
      @cockroachdb  Рік тому

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

  • @ahhindeed
    @ahhindeed Рік тому +1

    great explanation, thank you!

  • @codewithnacho
    @codewithnacho 3 місяці тому

    Awesome video! Thanks for sharing

  • @shenshaw5345
    @shenshaw5345 Рік тому +1

    Really great explantion

  • @rafco90
    @rafco90 Рік тому

    Excellent explanation!

  • @timdavis8951
    @timdavis8951 Рік тому +1

    Clear, basic, thanks!

    • @cockroachdb
      @cockroachdb  Рік тому

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

  • @-.-_._--
    @-.-_._-- 9 місяців тому

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

  • @igorg.8624
    @igorg.8624 6 місяців тому

    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....

  • @skincarver666
    @skincarver666 7 місяців тому

    great video

  • @heberrepiso2836
    @heberrepiso2836 2 роки тому +2

    Excelllent video.

  • @jesperhjholdt7871
    @jesperhjholdt7871 3 роки тому +3

    Thank you!'

  • @Sidra--
    @Sidra-- 9 місяців тому

    Thank you so much!

  • @senju31
    @senju31 2 роки тому

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

  • @shukes4645
    @shukes4645 Рік тому

    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

  • @gdejandespotovic
    @gdejandespotovic 2 роки тому

    tnx

  • @abrahamhahijary
    @abrahamhahijary Рік тому

    Clear and helpful, thanks!