> From: pgsql-hackers-owner(at)postgresql(dot)org
> Sorry I fail to understand what you mean with "legal"? Are you wondering
> about license restrictions? There are none.
Sorry, I just meant "correct" or "valid".
> As for compatibility, that's what major version numbers are for. This is
> not a PostgreSQL topic, but a general system one as for instance the same
> holds for libc.
Yes, but Windows users probably don't understand or know it. So, I suggested explicitly describing the application binary compatibility policy in the PostgreSQL manual. What do you think about it?
Regards
Takayuki Tsunakawa