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Database Schema

admin by admin
July 11, 2020
in Uncategorized
28
Database Schema



How to draw a diagram representing the entities, relationships and fields of a relational database.

If this video helped you, you may also benefit from these further examples of constructing database schema:
– identifying the tables in a given situation
– building the schema and determining the relationships

I’m Mr. Woo and my channel is all about learning – I love doing it, and I love helping others to do it too. I guess that’s why I became a teacher! I hope you get something out of these videos – I upload almost every weekday, so subscribe to find out when there’s something new!

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Comments 28

  1. Tech Donor says:
    2 years ago

    Simplest explanation on Schema in database and how to define it with real life example.

    It helped me a lot hopefully you will like it too.

    https://youtu.be/6CBjFBpZgaM

    Reply
  2. Zee Zee says:
    2 years ago

    Excellent way of explanation.

    Reply
  3. Philip Hagan says:
    2 years ago

    Thank you sir

    Reply
  4. Krishna Gubili says:
    2 years ago

    Very simply explained…Keep going!

    Reply
  5. Divya Nesana says:
    2 years ago

    THERE ARE MANY GOOD TEACHERS IN THE WORLD. BUT I WONDER WHY MY COLLEGE HAS NO TEACHERS LIKE THIS.

    Reply
  6. spandan gude says:
    2 years ago

    How did you manage to get the desired screens or options just by touching the projected part. Ive never seen that before.

    Reply
  7. Taqi Khan says:
    2 years ago

    Good job sir. Helped in understanding

    Reply
  8. Fido Lost says:
    2 years ago

    Another important concept is Normalization. So, following Eddie's example tables, we see that certain fields don't belong. The Student table shouldn't directly contain ClassIDs. The Class table shouldn't know anything about Teachers. The Teacher table shouldn't have a Subject (aka class). A more normalized approach would be to have a Person table with fields: PersonID, FirstName, LastName, DOB, and Address. The Class table would have ClassID, Room, and Subject. A separate Role table would have RoleID, RoleTitle (ie Teacher, Principal, Student, Undergraduate, …). Then a join or joint table would contain mostly foreign keys: Courses with fields: CourseID, ClassID, PersonID, RoleID.

    Reply
  9. Sreekant K says:
    2 years ago

    Topic is on Schema and students can't even answer elementary questions like primary and foreign key? The teacher is awesome but I guess his talents are wasted on this bunch.

    Reply
  10. Good DeedsLeadTo says:
    2 years ago

    Could u also show an example of many to many?
    Is this mapping always done from right to left?
    Thanks
    Records produced after joining depend on this mapping?
    Thanks

    Reply
  11. Asagi Ai says:
    2 years ago

    Kowalski Analysis. Select VideoLikes From YoutubeDB.ThisVideoInfo

    Reply
  12. jhay jaz says:
    2 years ago

    Helpful man…thanks for tutorial

    Reply
  13. SeanJTharpe says:
    2 years ago

    Thanks man, you are amazing! Very informative and the presentation absolutely helps! Thank you so much!! Subscribed.

    Reply
  14. Pacific NW says:
    2 years ago

    I watched some other videos, your style is much easier to follow but it is reinforcing what I learned from those. I feel like im in class answering your questions haha

    Reply
  15. asdfgf jl; says:
    2 years ago

    he's fucking drawing in paint with his fingers wtf

    Reply
  16. gaia kang says:
    2 years ago

    uxsql.com ^^ make you database business application.. just few click~~

    Reply
  17. Md Alif says:
    2 years ago

    thank u brother

    Reply
  18. Alex says:
    2 years ago

    yoooo, it's that math guy. What's up dude

    Reply
  19. Khoa Ngo says:
    2 years ago

    Thank you!

    Reply
  20. Caolain Hession says:
    2 years ago

    I apologise in advance, some may call me a hater but I feel compelled to tell you young eddie woo, that I find your energy and zeal very fucking annoying and I would enjoy punching you in the face many, many times, regards Caolain.

    Reply
  21. Hadi Setiawan says:
    2 years ago

    wow this was awesome teaching method

    Reply
  22. Emmit Smith says:
    2 years ago

    god I wish you were my database teacher

    Reply
  23. Harrison Woodard says:
    2 years ago

    I literally just started watching this video and got a splash of all the energy in your teaching method. You're awesome!

    Reply
  24. gowithchristbrah says:
    2 years ago

    would the field in the class table be "TeacherID"" as the foreign key because the primary key in the Teacher table is "TeacherID"?

    Reply
  25. Vinyl Addiction says:
    2 years ago

    I'm studying to be a full stack developer and being that I'm self taught the material is tricky. There's no shortage of free educational material in virtually any subject (it just takes dedication to find it). What's hard to find is necessary material delivered in a way that you can not only understand, but understand it easily. You sir accomplish this! Instead of just presenting the information you provide it in an energetic way that allows the student to feel like they naturally understand. Which then allows a student to go from not knowing a subject to being able to replicate it on their own.

    Reply
  26. Manu says:
    2 years ago

    thank you lord woo

    Reply
  27. Nico Braun says:
    2 years ago

    Liked that moment of pausing and letting the class think, what key would that be? hmmm… . Well done!

    Reply
  28. Rasika Jayasena says:
    2 years ago

    What is the difference between database schema and relation schema

    Reply

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