How to implement a small database to the server in C#?

Question

Database

There is a desktop application for the local network: a client in WPF and a server in C #. The user works with the table: edits cells and adds/removes columns.
It is necessary to implement something like a database:
1) write columns from the table for archiving, for example, when deleting;
2) if necessary, extract columns from it and place it in a table for the user.
I write "something like a database", because the database is small: 10-12 columns, no more than 1000 records - maybe limited to some external file? Tell me how to implement the database?

Answer 1

ravendb.net
embedded-mode
is pulled into the project with nuget