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    <p>As far as securing your database, I'd recommend creating a locked down user that can only execute stored procedures - then you don't have to worry about someone decompiling your code. They'd only be able to access what they can access through your code. <a href="http://www.webdeveloper.com/forum/showthread.php?t=232496" rel="nofollow">Here's a tutorial</a> on how to do that.</p> <p>As far as your main question goes, I would recommend all your data gathering/sorting be done in your SQL query. If you're doing that in the <code>JTable</code>, you end up mixing your Model and View (see <a href="http://www.webdeveloper.com/forum/showthread.php?t=232496" rel="nofollow">MVC</a> for more detail).</p> <p>So essentailly you want your data coming back from the query in this form:</p> <p><code>Student; Student Name; Test Assignment; Secondary Test Assignment</code></p> <p>Which means, </p> <ol> <li>You need to add a relation between your grade table and your assignment table (most likely addding <code>aid</code> to the <code>grading</code> table)</li> <li><p>You're going to need to come up with a slightly more complicated SQL Query - something like this:</p> <p><code>Select g.sid, g.name, a.name from ASSIGNMENTS a join GRADING g on a.aid = g.aid where g.tid = 123123 order by g.name</code></p></li> <li><p>Create a 2D array based on the data and put it in the table (If you're still using your PHP interface, you'll want to split the strings on your delimiters to create a 2D array.) </p> <p><code>((DefaultTableModel)table.getModel).setDataVector(data, columnNames);</code></p></li> </ol> <p><strong>EDIT</strong> If you're convinced you just want to search through the rows for a value, and then update a column in the row you found - this should get you in the right direction:</p> <pre><code>Integer searchStudentID = 123123; int searchColumn = 0; String updateValue = "Value"; int updateColumn = 3; //Look through the table for the right row Vector&lt;Vector&lt;Object&gt;&gt; data = ((DefaultTableModel)table.getModel()).getDataVector(); for(Vector&lt;Object&gt; row : data){ // If on the right row, update it if(row.elementAt(searchColumn).equals(searchStudentID)){ row.setElementAt(updateValue, updateColumn); } } </code></pre>
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    1. POInterpreting data strings and inserting it into a JTable in the correct column positions in Java
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    1. COThis doesn't really work out and I believe it's more complex than my original design. I was only asking how I could make it so the client could match up the columns in rows properly for the received data.
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    2. COIt'll be a bit more complex on the setup side, but much easier on the coding/maintenance side. Because each grade is associated with an assignment, it makes sense to do #1. To avoid all the code trying to match up Students to assignments (something SQL will easily do for you) it makes sense to do #2. And #3 is just explaining how you'd update a table with the data you received. If you want some guidance on how to `Search through all of the column names and insert the value into the proper column in that row where assignment name matches.`, I'll edit my answer to add that.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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