94 lines
3.9 KiB
SQL
94 lines
3.9 KiB
SQL
-- Migration: Advanced Grading System (Rubrics)
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-- Description: Creates tables for rubric-based assessment and grading workflows
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-- Created: 2026-02-17
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-- Rubrics table - Reusable evaluation templates
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CREATE TABLE IF NOT EXISTS rubrics (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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organization_id UUID NOT NULL REFERENCES organizations(id) ON DELETE CASCADE,
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course_id UUID REFERENCES courses(id) ON DELETE CASCADE, -- NULL = reusable across courses
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created_by UUID NOT NULL REFERENCES users(id),
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name VARCHAR(255) NOT NULL,
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description TEXT,
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total_points INTEGER NOT NULL DEFAULT 100,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_rubrics_org ON rubrics(organization_id);
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CREATE INDEX idx_rubrics_course ON rubrics(course_id);
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-- Rubric Criteria - Evaluation dimensions
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CREATE TABLE IF NOT EXISTS rubric_criteria (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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rubric_id UUID NOT NULL REFERENCES rubrics(id) ON DELETE CASCADE,
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name VARCHAR(255) NOT NULL,
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description TEXT,
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max_points INTEGER NOT NULL,
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position INTEGER NOT NULL DEFAULT 0,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_criteria_rubric ON rubric_criteria(rubric_id);
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-- Rubric Levels - Performance levels per criterion
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CREATE TABLE IF NOT EXISTS rubric_levels (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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criterion_id UUID NOT NULL REFERENCES rubric_criteria(id) ON DELETE CASCADE,
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name VARCHAR(100) NOT NULL, -- e.g., "Excellent", "Proficient", "Developing"
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description TEXT,
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points INTEGER NOT NULL,
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position INTEGER NOT NULL DEFAULT 0,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_levels_criterion ON rubric_levels(criterion_id);
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-- Lesson-Rubric Association
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CREATE TABLE IF NOT EXISTS lesson_rubrics (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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lesson_id UUID NOT NULL REFERENCES lessons(id) ON DELETE CASCADE,
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rubric_id UUID NOT NULL REFERENCES rubrics(id) ON DELETE CASCADE,
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is_active BOOLEAN DEFAULT TRUE,
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assigned_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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UNIQUE(lesson_id, rubric_id)
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);
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CREATE INDEX idx_lesson_rubrics_lesson ON lesson_rubrics(lesson_id);
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CREATE INDEX idx_lesson_rubrics_rubric ON lesson_rubrics(rubric_id);
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-- Rubric Assessments - Student evaluation results
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CREATE TABLE IF NOT EXISTS rubric_assessments (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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lesson_id UUID NOT NULL REFERENCES lessons(id) ON DELETE CASCADE,
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rubric_id UUID NOT NULL REFERENCES rubrics(id),
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user_id UUID NOT NULL REFERENCES users(id), -- student being assessed
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graded_by UUID REFERENCES users(id), -- instructor or peer reviewer
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submission_id UUID, -- if linked to peer_submissions
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total_score DECIMAL(5,2) NOT NULL,
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max_score INTEGER NOT NULL,
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feedback TEXT,
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status VARCHAR(50) DEFAULT 'draft', -- draft, submitted, published
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_assessments_lesson ON rubric_assessments(lesson_id);
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CREATE INDEX idx_assessments_user ON rubric_assessments(user_id);
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CREATE INDEX idx_assessments_grader ON rubric_assessments(graded_by);
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CREATE INDEX idx_assessments_status ON rubric_assessments(status);
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-- Assessment Scores - Individual criterion scores
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CREATE TABLE IF NOT EXISTS assessment_scores (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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assessment_id UUID NOT NULL REFERENCES rubric_assessments(id) ON DELETE CASCADE,
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criterion_id UUID NOT NULL REFERENCES rubric_criteria(id),
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level_id UUID REFERENCES rubric_levels(id), -- selected performance level
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points DECIMAL(5,2) NOT NULL,
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feedback TEXT,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_scores_assessment ON assessment_scores(assessment_id);
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CREATE INDEX idx_scores_criterion ON assessment_scores(criterion_id);
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