Really? No databases, whatsoever. Not even some xSV files?
In the context of the discussion I was considering DBMS and that is what people usually mean when they say database, we certainly don't have any DBA's looking after flat files :) If you want to argue that a file system or a flat file is a database then, again in the context of the discussion, Perl already has plenty of support in the core, no other modules required :) There are many types of servers which need no database for example; firewalls, mail gateways, proxy servers, web servers, applications servers... the last two may be operating as a front end to a database but run no database themselves.
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Do not seek to follow in the footsteps of the wise. Seek what they sought. -Basho