□ File menu, About menu, time function implementation
□ Implementation of inquiry, addition, modification, deletion, termination
▪ For inquiries, when selecting a customer in the customer status, the order status and number of inquiries are displayed at the bottom (items that satisfy the order status query condition)
▪ Addition and modification can be processed on a separate screen
▪ When you click End, you can exit after outputting a confirmation message
□ Functions "Classed"
● management.py
● db.db