This is the default example configuration of sqlite provided by Postfix. This config file was generated by Postfix running on CentOS 8.
It is located under: /etc/postfix/dynamicmaps.cf.d/sqlite
sqlite /usr/lib64/postfix/postfix-sqlite.so dict_sqlite_open
Download the raw file with wget or curl
wget -O sqlite.example http://exampleconfig.com/static/raw/postfix/centos8/etc/postfix/dynamicmaps.cf.d/sqlite
curl http://exampleconfig.com/static/raw/postfix/centos8/etc/postfix/dynamicmaps.cf.d/sqlite > sqlite.example
Other config files you might find useful