Initial commit: obsidian to gitea

study/courses/pm/report.figs/er.mmd

@@ -0,0 +1,113 @@
+erDiagram
+    USER {
+        int id
+        int company_id
+        string name
+        string email
+        string role
+    }
+
+    COMPANY {
+        int id
+        string name
+        string industry
+        string size
+    }
+
+    CANDIDATE_PROFILE {
+        int id
+        int user_id
+        string degree
+        int years_experience
+        string skill_tags
+        string resume_url
+    }
+
+    JOB_POSITION {
+        int id
+        int company_id
+        string title
+        string level
+        string required_skills
+        string description
+        string exam_policy_id
+    }
+
+    EXAM_POLICY {
+        string id
+        int total_questions
+        float easy_ratio
+        float medium_ratio
+        float hard_ratio
+        string type_ratio
+    }
+
+    QUESTION {
+        int id
+        string content
+        string type
+        string skill_tag
+        int difficulty
+        string source
+        bool is_active
+    }
+
+    QUESTION_STATS {
+        int question_id
+        int used_count
+        float avg_score
+        float correct_rate
+        float discrimination
+        float feedback_score
+        datetime last_used_at
+    }
+
+    EXAM_TEMPLATE {
+        int id
+        int job_id
+        string policy_id
+        string question_slots
+    }
+
+    EXAM_SESSION {
+        int id
+        int candidate_id
+        int job_id
+        int template_id
+        datetime start_time
+        datetime submit_time
+        float total_score
+        string status
+    }
+
+    ANSWER {
+        int id
+        int session_id
+        int question_id
+        string content
+        float score
+        float time_taken
+    }
+
+    QUESTION_FEEDBACK {
+        int id
+        int question_id
+        int from_user_id
+        int session_id
+        int rating
+        string comment
+        datetime created_at
+    }
+
+    COMPANY ||--o{ USER : has
+    USER ||--o{ CANDIDATE_PROFILE : has
+    COMPANY ||--o{ JOB_POSITION : posts
+    EXAM_POLICY ||--o{ JOB_POSITION : configures
+    JOB_POSITION ||--o{ EXAM_TEMPLATE : uses
+    EXAM_TEMPLATE ||--o{ EXAM_SESSION : instantiates
+    USER ||--o{ EXAM_SESSION : takes
+    EXAM_SESSION ||--o{ ANSWER : contains
+    QUESTION ||--o{ ANSWER : answered_in
+    QUESTION ||--|| QUESTION_STATS : stats
+    QUESTION ||--o{ QUESTION_FEEDBACK : receives
+    USER ||--o{ QUESTION_FEEDBACK : writes