I just want to understand and avoid mistakes .. I have this input table , so I designed this database to manage it , my question is : Is the design of StudentMarks good or bad in Normalization ? I need help please . The input form paper

My database design


It's not normalized. StudentMarks has one value for homework. That does not sound ideal.

Makes more sense, to me, to have a another table GRADES, or the like. CREATE TABLE grades ( category text, grade float ). Then you can insert into it VALUES ('homework', 100) keep all those grades and then later at query time avg() them.


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