As it turned out, directly accessing the sqlite database isn’t practical, since the format can change with each new Version of Zotero
(–> https://www.zotero.org/support/dev/client_coding/direct_sqlite_database_access: “Also be aware that the SQLite database structure can change between Zotero releases.”)
So I’ve figured out a script that’ll open a BibTex sheet (or any other for that matter), create a RTF-record with Title, Author and Year for every entry (row), and then close the sheet.
So for what it’s worth, here’s the script. Please feel free to use and/or modify it as you choose.
Sheet to RTF.pdf (51.5 KB)