26 lines
1.1 KiB
SQL
26 lines
1.1 KiB
SQL
-- Add grading categories table
|
|
CREATE TABLE grading_categories (
|
|
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
|
|
course_id UUID NOT NULL REFERENCES courses(id) ON DELETE CASCADE,
|
|
name TEXT NOT NULL,
|
|
weight INTEGER NOT NULL CHECK (weight >= 0 AND weight <= 100),
|
|
drop_count INTEGER NOT NULL DEFAULT 0,
|
|
created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
|
|
);
|
|
|
|
-- Update lessons with grading fields
|
|
ALTER TABLE lessons ADD COLUMN grading_category_id UUID REFERENCES grading_categories(id) ON DELETE SET NULL;
|
|
ALTER TABLE lessons ADD COLUMN is_graded BOOLEAN NOT NULL DEFAULT FALSE;
|
|
|
|
-- Create table to track individual student scores
|
|
CREATE TABLE user_grades (
|
|
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
|
|
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
|
|
course_id UUID NOT NULL REFERENCES courses(id) ON DELETE CASCADE,
|
|
lesson_id UUID NOT NULL REFERENCES lessons(id) ON DELETE CASCADE,
|
|
score FLOAT4 NOT NULL, -- 0.0 to 1.0 (percentage)
|
|
metadata JSONB, -- store specific answers or feedback
|
|
created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
|
UNIQUE(user_id, lesson_id)
|
|
);
|