Metadata is the other term for document properties. It is a data that describes another data. The word “meta” means “an underlying definition or description”. Traditionally, it was used in libraries as card catalogs. In digitals, metadata is also used to describe digital data.
What do you mean pieces? Like Laptop components? If so then motherboard,ram,cpu, and psu for a basic laptop so 4 I guess (5 if you want to include a gpu).
