The union of two tables is basically the total of the two tables, so "or" questions would be my guess.
Answer:
Programming is everywhere in the modern world and meets you in the street, your workplace, and the local grocery store. You interact with bar-code scanners regularly, and you almost certainly use lots of code while working, whether you're using a word processor to write a letter or an email platform to send messages. Programs used in real-world environments should also be programmed in the real world, so we have developed a new programming paradigm, “Real-World Programming (RWP),” which enables users to make programs for handling real-world environments as well as data in computers
No i don’t have to pay but there is additional stuff if you pay but i don’t pay for anything
