Zitat von
hsg:
4) the local database-system is free, if you need a client-server solution then you must by a server with more capabilities (transactions for example)
It's not free if you use it as a "server". For this you need a license.
A "server" is when you use it in Webbased/Server-Technik like ASP.NET or Intraweb or Citrix or Remote Desktop!