Hi Sunil -
1. There are some configuration changes it takes to upgrade to 6, covered in the documentation that is installed with v6. Check out the What's New guide after installation for instructions.
2. The new connection modes apply to DDA as well as the ADO.NET interfaces.
I just got an email saying VistaDb6 beta release is available now.
1. I have a few applications that I use VistaDB 5.7
Do I have to make any changes to my code to upgrade to ver 6
2. I do use DDA. Any changes here