Buhl Data probably thinks that everything must mature computer users these days - namely just exactly what the publisher wants:
Spend money every year, so that the software continues to run.
For safety-related software, such as firewall systems or anti-virus software I can this idea very well understand - finally to the system well protected and the software up to date, Computer Programming costs so uch money if you 0-day exploits want to find and fix
But let's be honest, dear publisher:
A database with a graphical user interface is created today is fast and will run until the user or database have reached their limits. Since this does not happen normally, must either be spotted by paid additional functions - or by a Zwangsabo so databases can be used in the following year, and earned the publishing house money.
Seriously: Who wants to please? I have the software only briefly famous and then de-installed - 365 days of life and then can not access my data at year-end, to me are just too stupid.
From me there's therefore no recommendation to buy, but buyers who do not bother to Zwangsabo be here come with a few clicks to the destination and in the following years merry money to spend.