Normalize a database to 3NF
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Title: Normalize a database to 3NF

Essay Details:

Subject: Technology
Date: June 19, 2012
Level: University
Grade: A
Length: 4 / 918

Essay text:

Notice that student 10 has 4 grades corresponding to 4 courses that she took. These are repeating groups. Therefore, the table is unnormalized, because it isn't in 1NF. So, to put it in 1NF, we must REMOVE the repeating groups. One way to do that is as follows: 10 Smith Mary 100 Jones Sally A CIT150 10 Smith Mary 100 Jones Sally B CIT160 10 Smith Mary 100 Jones Sally C CIT170 10 Smith Mary 100 Jones Sally A CIT180 20 Adams William 200 Johnson Charles A CIT150 20 Adams William 200 Johnson Charles B CIT160 30 Davis Robert 100 Jones Sally B CIT150 30 Davis Robert 100 Jones Sally A CIT160 It is now in 1NF...

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