Database Design 20 - Introduction to Keys

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Опубликовано:

22 июл 2014

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Комментарии : 26

@zmgpark 6 лет назад

Nice save with the key drawing 9:20, excelent teaching too man. thanks.

@KrossFire330 3 года назад

this shit will never NOT be funny loool

@codebreakthrough 10 лет назад

This video is an Introduction to Keys. Learn more by clicking the link below and watching my other videos! buff.ly/1qR2xrL

@dylanmaulucci968 6 лет назад

Dude, you are so funny! Love your humoresque touches with all your tutorials! Rock on.

@tibretin 7 лет назад

I'm watching you at speed 1.5...That's makes you speak on steroid which is really cool, you should try ;) Keep up the good work...

@user-bp6sh4tm9g 6 лет назад

lol, It is true.

@partspieces8165 7 месяцев назад

U make class so fun & silly & so amazinggg

@JIMMI_CANADA101 4 года назад

You got brains man

@sscapture 3 месяца назад

Love you and your videos!! 💖

@Soccerplr87 4 года назад

You're a damn funny guy and it makes it a lot more fun! Great job Caleb :)

@rebeccamellinger1941 2 года назад

Who is Caleb Curry? Love the video tutorials, thanks for posting.

@blakebacon95 9 лет назад

haha sweet intro, and great tutorials!

@tzezc 8 лет назад

Great!

@marionyoung8555 6 лет назад

lol u are a cool guy :) and intelligent

@monaisazad34 6 лет назад

If the key could not be changed, how we can go to the website and change our email or username? does it mean they do not use our username or email as a key?

@codebreakthrough 6 лет назад

mona isazad well, the key CAN change, it's just frowned upon and should not happen. More realistically is that there is an ID column and the email or username could change.

@monaisazad34 6 лет назад

Thanks a million.

@shamim12314 10 месяцев назад

Watching thsi video after 9 years!

@09corpoblu 8 лет назад

even though, usernames can be unique, how about if you sign you sign up for something, and yet the website will give an error message, the username is already in use? same like a password.

@codebreakthrough 8 лет назад

+John Olegario If I understand you correctly, you are asking why websites do not let you use a username that is already in use? It would be because the column has the characteristic of UNIQUE. This means you can not have repeating usernames. You cannot create an account with the username that is the same as somebody else.