Administrator (username, password)
Employees (user name, password, employee number, name, gender, age, contact phone number)
Replenish onr's stock, stock number, drug number, name of drug, replenish onr's stock, stock quantity)
Sales (sales number, number of medicines and drugs, purchase price, selling price, sales volume, sales amount)
Suppliers (supplier number, supplier name, contact person, contact information, city)
Drugs (drugs, drugs, suppliers, production date, validity, note)
Bad goods (bad goods number, number of medicines and drugs, suppliers, notes)
Warehouse (number, drug number, name of drug, drug number)