Can Excel be called subd?

Question

excel

whether it is possible to name an ex-fur-tree subd?
Looks like there are tables. Well, yes, all sorts of postgres and oracles probably have more functionality, but still.

Answer 1

Can Excel be called subd?

Then the text file is also a DBMS.
And birch bark there too.
Microsoft Access - this can be called a DBMS.
Excel is a spreadsheet.

Answer 2

Yes, absolutely, why not. To some extent, it even complies with the rules of relational DBMS, and not a single DBMS fulfills them all. There are questions about backup and logging, ie. to reliability, but these are more limitations of the Excel client than the built-in Excel DBMS.