Files
K12Study/docs/architecture/modules/01-课程学习/er图.drawio

65 lines
8.3 KiB
XML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?xml version="1.0" encoding="UTF-8"?>
<mxfile host="app.diagrams.net" modified="2026-04-14T10:42:00.000Z" agent="Oz" version="24.7.17">
<diagram id="course-er" name="ER图">
<mxGraphModel dx="1800" dy="1200" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1800" pageHeight="1200" math="0" shadow="0">
<root>
<mxCell id="0"/>
<mxCell id="1" parent="0"/>
<mxCell id="2" value="01 课程学习 - ER图" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;fontSize=22;fontStyle=1;" parent="1" vertex="1">
<mxGeometry x="20" y="20" width="360" height="30" as="geometry"/>
</mxCell>
<mxCell id="3" value="课程主数据 + 学习过程数据分层;所有业务主表均携带 tenant_id/adcode/dept_path" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;fontSize=13;fontColor=#666666;" parent="1" vertex="1">
<mxGeometry x="20" y="52" width="860" height="24" as="geometry"/>
</mxCell>
<mxCell id="10" value="cl_course&lt;br&gt;PK course_id&lt;br&gt;title, subject_code, grade_code&lt;br&gt;difficulty_level, status&lt;br&gt;tenant_id, adcode, created_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
<mxGeometry x="40" y="120" width="250" height="130" as="geometry"/>
</mxCell>
<mxCell id="11" value="cl_course_chapter&lt;br&gt;PK chapter_id&lt;br&gt;FK course_id -&gt; cl_course.course_id&lt;br&gt;chapter_no, chapter_title&lt;br&gt;tenant_id, created_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
<mxGeometry x="330" y="120" width="250" height="130" as="geometry"/>
</mxCell>
<mxCell id="12" value="cl_course_lesson&lt;br&gt;PK lesson_id&lt;br&gt;FK chapter_id -&gt; cl_course_chapter.chapter_id&lt;br&gt;lesson_no, lesson_title, duration_sec&lt;br&gt;tenant_id, created_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
<mxGeometry x="620" y="120" width="270" height="130" as="geometry"/>
</mxCell>
<mxCell id="13" value="cl_knowledge_point&lt;br&gt;PK kp_id&lt;br&gt;kp_code, kp_name, subject_code, grade_code&lt;br&gt;tenant_id, created_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#e1d5e7;strokeColor=#9673a6;" parent="1" vertex="1">
<mxGeometry x="930" y="120" width="260" height="120" as="geometry"/>
</mxCell>
<mxCell id="14" value="cl_course_knowledge_rel&lt;br&gt;PK (course_id, kp_id)&lt;br&gt;FK course_id -&gt; cl_course.course_id&lt;br&gt;FK kp_id -&gt; cl_knowledge_point.kp_id&lt;br&gt;weight, tenant_id" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;" parent="1" vertex="1">
<mxGeometry x="1230" y="120" width="280" height="130" as="geometry"/>
</mxCell>
<mxCell id="15" value="cl_course_resource&lt;br&gt;PK resource_id&lt;br&gt;FK lesson_id -&gt; cl_course_lesson.lesson_id&lt;br&gt;resource_type(pdf/video/doc), resource_url&lt;br&gt;tenant_id, created_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;" parent="1" vertex="1">
<mxGeometry x="620" y="290" width="290" height="130" as="geometry"/>
</mxCell>
<mxCell id="16" value="cl_course_tag&lt;br&gt;PK tag_id&lt;br&gt;tag_name, tag_type&lt;br&gt;tenant_id, created_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#e1d5e7;strokeColor=#9673a6;" parent="1" vertex="1">
<mxGeometry x="40" y="300" width="230" height="110" as="geometry"/>
</mxCell>
<mxCell id="17" value="cl_course_tag_rel&lt;br&gt;PK (course_id, tag_id)&lt;br&gt;FK course_id -&gt; cl_course.course_id&lt;br&gt;FK tag_id -&gt; cl_course_tag.tag_id&lt;br&gt;tenant_id" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;" parent="1" vertex="1">
<mxGeometry x="300" y="300" width="270" height="120" as="geometry"/>
</mxCell>
<mxCell id="18" value="cl_learning_session&lt;br&gt;PK session_id&lt;br&gt;FK user_id -&gt; tb_sys_user.user_id&lt;br&gt;FK course_id -&gt; cl_course.course_id&lt;br&gt;status(STARTED/PAUSED/COMPLETED)&lt;br&gt;started_at, ended_at, tenant_id" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;" parent="1" vertex="1">
<mxGeometry x="930" y="290" width="300" height="140" as="geometry"/>
</mxCell>
<mxCell id="19" value="cl_learning_progress&lt;br&gt;PK progress_id&lt;br&gt;FK session_id -&gt; cl_learning_session.session_id&lt;br&gt;FK lesson_id -&gt; cl_course_lesson.lesson_id&lt;br&gt;progress_pct, last_position_sec&lt;br&gt;mastery_level, tenant_id, updated_at" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;" parent="1" vertex="1">
<mxGeometry x="1260" y="300" width="320" height="140" as="geometry"/>
</mxCell>
<mxCell id="20" value="cl_learning_event&lt;br&gt;PK event_id&lt;br&gt;FK session_id -&gt; cl_learning_session.session_id&lt;br&gt;event_type(start/pause/seek/finish)&lt;br&gt;event_time, payload_json, tenant_id" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;" parent="1" vertex="1">
<mxGeometry x="930" y="460" width="300" height="130" as="geometry"/>
</mxCell>
<mxCell id="21" value="设计方法与原因&lt;br&gt;1) 聚合根Course / LearningSession&lt;br&gt;2) 状态机Session状态驱动进度写入&lt;br&gt;3) 标签与知识点解耦,支持多维检索&lt;br&gt;4) 事件明细单表追加,兼顾审计与回放" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f5f5f5;strokeColor=#666666;" parent="1" vertex="1">
<mxGeometry x="40" y="470" width="840" height="120" as="geometry"/>
</mxCell>
<mxCell id="100" value="1:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="11" target="10" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="101" value="1:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="12" target="11" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="102" value="1:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="15" target="12" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="103" value="M:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="14" target="10" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="104" value="M:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="14" target="13" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="105" value="M:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="17" target="10" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="106" value="M:N" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="17" target="16" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="107" value="N:1" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="18" target="10" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="108" value="N:1" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="19" target="18" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="109" value="N:1" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="19" target="12" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
<mxCell id="110" value="N:1" style="edgeStyle=orthogonalEdgeStyle;rounded=0;jettySize=auto;html=1;endArrow=block;endFill=1;" parent="1" source="20" target="18" edge="1"><mxGeometry relative="1" as="geometry"/></mxCell>
</root>
</mxGraphModel>
</diagram>
</mxfile>