In MS office Access for instance there is always a way to import Excel data just right in Access ribben labeled Import External file and by following the wizard view, you can easily link to Excel data.

But I don't know whether it is possible in Libreoffice Base to import Calc data. Is there anyway to achieve that? At work most of the time my colleagues sent me files in xlsx so when I want to use them in base I don't know what to do.

I like base because it can deal with large quantity of data unlike Calc or excel.