Maxim Dolgolyov
126 lines
6.0 KiB
SQL
126 lines
6.0 KiB
SQL
-- ═══════════════════════════════════════════════════════════════
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-- 022: Exam Preparation Module
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--
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-- Generic exam preparation infrastructure parameterized by exam_key.
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-- Supports multiple exams (math9, phys9, chem9, math11ce, etc.) sharing
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-- the same task bank, attempts tracking, mock sessions, and study plans.
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--
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-- See docs/exam-prep-plan.md for full architecture.
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-- ═══════════════════════════════════════════════════════════════
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-- ── Exam tracks registry ────────────────────────────────────────
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CREATE TABLE exam_tracks (
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exam_key TEXT PRIMARY KEY,
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title TEXT NOT NULL,
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subject_slug TEXT NOT NULL,
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grade INTEGER NOT NULL,
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duration_min INTEGER NOT NULL,
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tasks_per_variant INTEGER NOT NULL,
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variants_count INTEGER NOT NULL,
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scoring_json TEXT,
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intro_html TEXT,
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enabled INTEGER NOT NULL DEFAULT 1,
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sort_order INTEGER NOT NULL DEFAULT 0
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);
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-- ── Task bank (one row per task across all variants) ────────────
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CREATE TABLE exam_tasks (
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id INTEGER PRIMARY KEY,
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exam_key TEXT NOT NULL REFERENCES exam_tracks(exam_key) ON DELETE CASCADE,
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variant INTEGER NOT NULL,
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task_idx INTEGER NOT NULL,
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task_type TEXT NOT NULL CHECK (task_type IN ('mc','open','long')),
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text_html TEXT NOT NULL,
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figure_html TEXT,
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opts_json TEXT,
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answer TEXT,
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solution_html TEXT NOT NULL,
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topic TEXT,
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subtopic TEXT,
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difficulty INTEGER,
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UNIQUE(exam_key, variant, task_idx)
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);
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CREATE INDEX idx_exam_tasks_topic ON exam_tasks(exam_key, topic);
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CREATE INDEX idx_exam_tasks_variant ON exam_tasks(exam_key, variant);
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CREATE INDEX idx_exam_tasks_type ON exam_tasks(exam_key, task_type);
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-- ── User attempts ───────────────────────────────────────────────
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CREATE TABLE exam_attempts (
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id INTEGER PRIMARY KEY,
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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exam_task_id INTEGER NOT NULL REFERENCES exam_tasks(id) ON DELETE CASCADE,
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user_answer TEXT,
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is_correct INTEGER,
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time_ms INTEGER,
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mode TEXT NOT NULL CHECK (mode IN ('practice','variant','topic','mock')),
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session_id INTEGER,
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hint_used INTEGER NOT NULL DEFAULT 0,
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solution_viewed INTEGER NOT NULL DEFAULT 0,
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created_at INTEGER NOT NULL
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);
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CREATE INDEX idx_exam_attempts_user_time ON exam_attempts(user_id, created_at DESC);
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CREATE INDEX idx_exam_attempts_task ON exam_attempts(exam_task_id);
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CREATE INDEX idx_exam_attempts_session ON exam_attempts(session_id);
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CREATE INDEX idx_exam_attempts_user_task ON exam_attempts(user_id, exam_task_id, created_at DESC);
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-- ── Mock exam sessions ──────────────────────────────────────────
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CREATE TABLE exam_mock_sessions (
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id INTEGER PRIMARY KEY,
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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exam_key TEXT NOT NULL,
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variant INTEGER,
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source TEXT NOT NULL CHECK (source IN ('variant','random','weak-topics')),
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task_ids_json TEXT NOT NULL,
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started_at INTEGER NOT NULL,
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finished_at INTEGER,
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duration_planned_min INTEGER NOT NULL,
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score INTEGER,
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total_correct INTEGER,
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total_tasks INTEGER,
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status TEXT NOT NULL DEFAULT 'active' CHECK (status IN ('active','finished','abandoned'))
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);
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CREATE INDEX idx_mock_user ON exam_mock_sessions(user_id, started_at DESC);
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-- ── User preparation plan ───────────────────────────────────────
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CREATE TABLE exam_user_plan (
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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exam_key TEXT NOT NULL,
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exam_date TEXT NOT NULL,
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daily_target INTEGER NOT NULL DEFAULT 10,
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weak_focus INTEGER NOT NULL DEFAULT 1,
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created_at INTEGER NOT NULL,
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updated_at INTEGER NOT NULL,
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PRIMARY KEY (user_id, exam_key)
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);
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-- ── Topic dictionary (populated in F6) ──────────────────────────
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CREATE TABLE exam_topics (
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slug TEXT PRIMARY KEY,
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exam_key TEXT NOT NULL,
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parent_slug TEXT,
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title TEXT NOT NULL,
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description TEXT,
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sort_order INTEGER NOT NULL DEFAULT 0
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);
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CREATE INDEX idx_topics_exam ON exam_topics(exam_key, parent_slug);
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-- ── Seed: math9 track ───────────────────────────────────────────
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-- Placeholder scoring grid (simple proportional). Replace with the actual
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-- Belarus 9th-grade math exam grid once published per academic year.
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INSERT INTO exam_tracks (
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exam_key, title, subject_slug, grade, duration_min,
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tasks_per_variant, variants_count, scoring_json, intro_html, enabled, sort_order
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) VALUES (
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'math9',
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'Экзамен 9 класс — Математика',
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'math',
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9,
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180,
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10,
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80,
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'[{"correct":30,"score":10},{"correct":27,"score":9},{"correct":24,"score":8},{"correct":21,"score":7},{"correct":18,"score":6},{"correct":15,"score":5},{"correct":12,"score":4},{"correct":9,"score":3},{"correct":6,"score":2},{"correct":3,"score":1},{"correct":0,"score":0}]',
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'<p>Полная подготовка к выпускному экзамену по математике за 9 класс. 80 реальных вариантов, разбор каждого задания, тренажёр по темам, пробные экзамены с таймером.</p>',
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1,
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10
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);
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