53 lines
2.9 KiB
SQL
53 lines
2.9 KiB
SQL
-- Restaurant Database Management System
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-- =======================================================
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-- USER TABLE
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-- =======================================================
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CREATE TABLE users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(50) NOT NULL UNIQUE,
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password_hash VARCHAR(255) NOT NULL,
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email VARCHAR(100)
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);
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-- =======================================================
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-- MENU ITEM TABLE
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-- =======================================================
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CREATE TABLE menu_items (
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id SERIAL PRIMARY KEY,
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name VARCHAR(100) NOT NULL,
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description TEXT,
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price NUMERIC(10, 2) NOT NULL CHECK (price > 0),
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category VARCHAR(50)
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);
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-- =======================================================
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-- ORDER TABLE
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-- =======================================================
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CREATE TABLE orders (
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id SERIAL PRIMARY KEY,
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user_id INT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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created_at TIMESTAMP NOT NULL DEFAULT NOW(),
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total_price NUMERIC(10, 2) NOT NULL CHECK (total_price >= 0)
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);
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-- =======================================================
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-- ORDER DETAIL TABLE
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-- =======================================================
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CREATE TABLE order_details (
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id SERIAL PRIMARY KEY,
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order_id INT NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
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menu_item_id INT NOT NULL REFERENCES menu_items(id),
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quantity INT NOT NULL CHECK (quantity > 0),
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unit_price NUMERIC(10, 2) NOT NULL CHECK (unit_price > 0)
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);
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-- =======================================================
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-- INITIAL MENU DATA
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-- =======================================================
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INSERT INTO menu_items (name, description, price, category) VALUES
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('Margherita Pizza', 'Classic tomato sauce and mozzarella', 10.00, 'Pizza'),
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('BBQ Burger', 'Juicy beef patty with BBQ sauce', 8.50, 'Burger'),
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('Spaghetti Carbonara', 'Creamy pasta with pancetta and egg', 12.00, 'Pasta'),
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('Tiramisu', 'Italian coffee dessert', 5.50, 'Dessert'),
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('Cola', 'Ice-cold soft drink', 2.50, 'Drink'); |