Is the file system a document-oriented DBMS?

Question

Database

The question is theoretical, about definitions. The main functions of the Document Oriented DBMS are similar to the properties of the file system (take a file from a path, put a file into a specified path), just a different API and a different intended purpose. Yes, DBMS often has additional features. functions (although, in general, grep - partly replaces the function of searching for documents by content, and awk replaces the function of calculating the sum in a text document).

Is there a clear separation between the filesystem and the RDBMS, or is the filesystem a special case of the RDBMS? If not, is there a definition somewhere, at some point of which this discrepancy is visible? Or, is a simple network interface to a file system (like an ftp server) a DDBMS?

Answer 1

No.
Though she has features of a DBMS.

Answer 2

is not
if you think it is not - consider FS metadata from a Word document

Answer 3

Is there a clear separation between file system and DBMS

There is. It is necessary to start from the very definition of what is a DBMS, and what is a file system.

is a simple network interface to a file system (like a ftp server) a DBMS?

FTP is a network server of the second kind, DBMS is a network server of the third kind. This is first. Secondly, the network interface to the file system sounds incorrect.