check-in_system/checkin-system/schema.sql

CREATE TABLE IF NOT EXISTS users (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    username TEXT UNIQUE NOT NULL,
    password_hash TEXT NOT NULL,
    role TEXT NOT NULL CHECK(role IN ('admin', 'manager'))
);

CREATE TABLE IF NOT EXISTS events (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT NOT NULL,
    created_by INTEGER NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    is_active BOOLEAN DEFAULT 1,
    is_passed BOOLEAN DEFAULT 0,
    FOREIGN KEY (created_by) REFERENCES users(id)
);

CREATE TABLE IF NOT EXISTS event_columns (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    event_id INTEGER NOT NULL,
    column_name TEXT NOT NULL,
    column_order INTEGER NOT NULL,
    FOREIGN KEY (event_id) REFERENCES events(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS guests (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    event_id INTEGER NOT NULL,
    name TEXT NOT NULL,
    surname TEXT NOT NULL,
    second_name TEXT,
    additional_data TEXT,
    checked_in BOOLEAN DEFAULT 0,
    checked_in_at TIMESTAMP,
    FOREIGN KEY (event_id) REFERENCES events(id) ON DELETE CASCADE
);