[openssl-users] Alternatives to flat text file database back-end?

[Ikonta]

Hi everybody,

Possibly stupid question:
The default and only known for me OpenSSL database format is flat text file (afair index.txt in default openssl.cnf).
Was ever suggested an idea to provide some alternatives (maybe relational (SQL) database server, or sqlite, or LDAP)?
What can I read (or at least what keywords use to search) about it?

Or it will be better to ask this question into -dev list?