I work for a government agency, and we've been requested via a freedom of information request for the layout of the tables of one of our systems, a data dictionary and schema design request.
What are the dangers in sharing this? My initial concerns are need to know concerns, making SQL injection attacks much easier, and a bunch of starting information for future vulnerabilities (ie, maybe a bug is introduced later that only affects varchar columns over 500 bytes in length... here's a handy list of all of ours!).
What else is of concern? I don't want to be an obstacle for the sake of being an obstacle, but as a DBA, this makes me REALLY nervous.