Added: 3 years ago
From: roughsealtd
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  • Just got tha books database at bookdowner[dot]com

  • normally the primary key for a table is an extra column that is noramlly a NUMBER or ALPHANUMERIC type that is incremented by a certain rule when a new data row is inserted.

  • @militantmindset

    Often, but not necessarily. This is what one does to have a short key that needs to be referenced elsewhere and when the "natural key" is long (eg composed of several columns)

  • The teaching style was very good and made a fairly difficult topic easy to understand, thanks a lot.

  • I am watching your video now on SQL Database Design in 11 Minutes Part 1. I find your teaching style very easy to follow, and I just want to say, I will be watching all of your series. I like how you keep it interesting and expand the thinking process building techniques. Thank you very much! This Relational Database Design course is fast paced and difficult to follow. I only have taken a basic introduction to Python Programing with no prior experience. I only have 2 weeks to complete it.

  • Hey I have been looking for something like this to clarify basic database design!... nice!

    And thanks!

  • thanks, i've been looking for a basics lecture on database theory. awesome, simple, and well explained!

  • Thank you. I've watched and enjoyed all of your sql videos.

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