International cataloguing principles are rules that librarians use to organize and describe books, movies, music, and other things in libraries all around the world so people can find them easily.
Let's say you have a bunch of toys on the floor, and you want to tidy them up. You could put all the dolls in one spot, all the trucks in another, and all the blocks in a third place. This is organization.
Cataloguing works the same way. Instead of toys, librarians are organizing and describing things like books. They use special codes and descriptions called metadata to capture information about each item. This information includes things like the author, title, and subject, which will help you find what you're looking for.
Now here's where the international part comes in: when people from different countries want to look for something, they might use different words to describe it. For example, in the US, people say "sidewalk" but in the UK, they say "pavement." So, if a librarian in the US catalogued a book about sidewalks but a librarian in the UK catalogued a book about pavements, someone in the UK might not find the book if they searched for "sidewalk."
To solve this problem, international cataloguing principles were developed. These principles help librarians around the world use the same words and standards to describe things so people from any country can find them. It's like having a universal language for finding books.
So, when you go to a library to find a book or a DVD, remember that international cataloguing principles are what make it possible for the librarian to quickly and easily find what you're looking for.