Budget: 5000 UAH Deadline: 8 days
Good Morning !
About the organization of data collection:
Each service has a unique ID (ID).
After the customer has paid the service in a accounting or other accounting program, such actual payment is attributed to the same ID as the service.
Depending on the functionality of the software, the report or payments are traced into the analytical base, which forms the report by dates (week, month, year).
So first you will need to work with unique identifiers, then with analytical tables and algorithms of drawing data from the accounting bases.