I want to know the answer to the following question:
What's the name of the HP database that's similar to IANA but not compatible with it?
All the background I'm provided with is that "In many of those systems there is also a system-wide setting that is applied if the TZ environment variable isn't set: this setting is controlled by the contents of the /etc/localtime file, which is usually a symbolic link or hard link to one of the zoneinfo files.". Is that enough to answer the question?