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update multiple checkbox values using JSP-Servlet  RSS feed

 
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Dear Expert,
I facing the problem related to updating multiple checkbox values using JSP-Servlet. I had 3 table structure, shown below. The student can choose more than one subject for examples Mathematics, Science, Biology, Chemistry. At first, let's say that the student chooses Math and Biology. How can I make an update to the checkbox subject if the student wants to change the selected subject? how can I display the checked subject on the JSP? The checkbox is a subject.  I am truly new here and need your guides. Thanks in advance
 
nazirah nazri
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Here is my table structure.
domain-diagram-uatc-(L)-22.png
[Thumbnail for domain-diagram-uatc-(L)-22.png]
 
Ranch Hand
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Can you please elaborate more on this. As this makes two to three different understanding for me.
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