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course_formative_quiz_grades.html
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<head>
<style>
div {
font-family: monospace;
}
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
tr:nth-child(odd) {
background-color: #FFFFFF;
}
tr:nth-child(even) {
background-color: #EBF2F2;
}
th, td {
text-align: left;
padding: 5px 10px 5px 5px;
}
</style>
</head>
<div>
<h1>course_formative_quiz_grades</h1>
<h2>Description</h2>
<p>
Grades of a single user in each of the ungraded quizzes.
</p>
<h2> Columns </h2>
<table>
<tr><th>Name</th><th>Description</th></tr>
<tr>
<td>course_id</td><td>22 character unique string identifying an individual course</td>
</tr>
<tr>
<td>course_item_id</td><td>5 character alphanumeric string identifying an individual item within a course. course_item_id need not be unique, but a course_item_id/course_id pair is unique.</td>
</tr>
<tr>
<td>gatech_user_id</td><td>Encrypted Coursera user id for gatech data.</td>
</tr>
<tr>
<td>course_quiz_grade_ts</td><td>The timestamp for when a learner submitted a quiz and it was graded. For each learner, there can be multiple timestamps for one quiz if the learner submits the quiz multiple times. </td>
</tr>
<tr>
<td>course_quiz_grade</td><td>The number of points a learner scored on a particular submission of a quiz. For each learner, there can be multiple grades for one quiz if the learner submits the quiz multiple times. </td>
</tr>
<tr>
<td>course_quiz_max_grade</td><td>Maximum possible points that can be scored on that quiz.</td>
</tr>
</table>
<h2>SQL create statement</h2>
<pre>
CREATE TABLE course_formative_quiz_grades (
course_id varchar
,course_item_id varchar
,gatech_user_id VARCHAR(50) NOT NULL
,course_quiz_grade_ts timestamp
,course_quiz_grade float4
,course_quiz_max_grade float4
,PRIMARY KEY (course_id, course_item_id, gatech_user_id, course_quiz_grade_ts)
,FOREIGN KEY (gatech_user_id) REFERENCES users(gatech_user_id)
);
</pre>
</div>