Bu yerda mijoz ma'lumotlarini saqlash va hisob-kitoblarni kuzatib borish uchun ma'lumotlar bazasi sxemasi taklif etiladi: ```sql CREATE TABLE customers (customer_id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255), address TEXT, phone VARCHAR(255), email VARCHAR(255) ); CREATE TABLE invoices (invoice_id INT AUTO_INCREMENT PRIMARY KEY, customer_id INT, invoice_number VARCHAR(255), date DATE, item VARCHAR(255), amount DECIMAL(10, 2), paid BOOLEAN DEFAULT 0, FOREIGN KEY (customer_id) REFERCES customers (customer
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