Mr.Fayyaz is a milkman who is supplying milk to many customer. Each customer has its name CNIC Home_Address and phone number. Mr Fayyaz wants to keep the track of daily milk supply quantity and price....

Mr.Fayyaz is a milkman who is supplying milk to many customer. Each customer has its name CNIC Home_Address and phone number. Mr Fayyaz wants to keep the track of daily milk supply quantity and price. He also wants to monthly record of each customer. Customer could also login and use the milkman application to view its bill. Mr Fayyaz could see the total sales of each customer. The milk has two types buffalo milk and cow milk. Mr Fayyaz also want to maintain the record of workers in the application.

Define the classes (attributes, behaviors or function)