I have Microsoft Works database. I have just downloaded LibreOffice and want to transfer my database material to its Database. Is it possible to do this, please? Or do I have to re-enter the data bit by bit i.e. start afresh on LibreOffice?

I have already taken the step of transferring the data from MS Works Database to LibrOffice Calc Spread Sheet.

Here’s a link to a description of how to import a calc sheet to base, Import to base

Or do a web search for “libreoffice use calc sheet as base table” to find other examples.

Or you can use a calc sheet as a registered data source for base, See this

Start afresh on LibreOffice. Sorry about that.