MySQL SQL Statements Tutorial 5

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Here I explain what SQL is & show many statements in sql. I'll teach you everything on Atomic Data, Normalized Data, Primary Keys and Foreign Keys
  1. Derek Banas
  2. SQL is
  3. mysql
  4. sql select table
  5. atomic data
  6. normalized data
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Комментарии
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I honestly liked the music in the background. Different strokes, different folks. Great videos!

x_Liquid_x
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Sorry about that. I made a newer / better tutorial on sql if you're interested check out my youtube channel

derekbanas
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Until I read the comments, I did not even notice the music. I was so focused on what Derek was saying.

ZenrichSocial
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Hey Derek! Thank you for all the videos you make! You.Are.Awesome! You have helped me learn SO many things about various languages that I was unable to learn elsewhere. You explain things VERY well and VERY simply. Simple is good in my opinion.

I have a question on this video.

Under the "Rules of Normalized Tables" you have the point "You also want to eliminate using the same values repeatedly in your columns. Ex. You wouldn't want a column named instructors, in which you hand typed in their names each time. You instead, should create an instructor table and link to it's key."

My question is: when referring to typing in the instructor names each time, do you mean having to retype the same instructors name, repeatedly? E.g. Column = Instructor, Row 1 = "Joe Schmo", Row 2 = "Jane Doe", Row 3 = "Joe Schmo", Row 4 = "Jane Doe", Row 5 = "Joe Schmo", Row 6 = "Jack Sparrow", etc. In this case, one would be better off creating an instructor table that contained each instructor once. Is that the point of that rule?

Thanks for your help! :)

Quaerite.Intellectum
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Yes, I cant watch tutorial with music too

andreybraslavskiy