Task Review / Submission #4421

Review: Database Schema Design

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Submitted
Oct 25, 2:30 PM (On Time)

Intern's Comments:

I've completed the schema for the core user and messaging modules. I used a polymorphic association for the notifications system to handle different types of events. I also added indexes on frequently queried fields like email and timestamp. Please check the `user_preferences` table specifically, as I'm not sure if I should have normalized the JSON settings further.

Attachments:

db_schema_v1.sql
ER_Diagram.png

File Preview: db_schema_v1.sql

CREATE TABLE users (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    email VARCHAR(255) UNIQUE NOT NULL,
    password_hash TEXT NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE user_preferences (
    user_id UUID REFERENCES users(id) ON DELETE CASCADE,
    settings JSONB NOT NULL DEFAULT '{}',
    PRIMARY KEY (user_id)
);

-- TODO: Check if this should be indexed for partial matches
CREATE INDEX idx_user_settings_theme ON user_preferences ((settings->>'theme'));

Grading & Feedback

Novice Expert
AI Review Suggestion

"The SQL follows standard conventions. Recommendation: Point out that `JSONB` for simple themes might be overkill, but good for future scalability."

Task History

Task Assigned
Oct 23, 10:00 AM
Started Work
Oct 23, 11:30 AM
Draft Submitted
Oct 25, 2:30 PM