Q:

Can I use the same dev database for Azure AppFabric Workflows, as well as "regular" WF4.0 workflows? 

I'm exploring the .NET 4.0 Update 1 features and installed the Azure Appfabric SDK and also Workflow Foundation Samples. 
I'm mostly interested in testing the new State Machine, correlation, persistance, ASP.NET MVC, and Azure + MVC in this example. 
Should I use a separate database for my Azure Appfabric work, and traditional ASP MVC Workflow work?   Can I use the same one? 

A:

The database schema AppFabric uses is a super set of the normal persistence schema.  So it could  work but there is a good change AppFabric will get confused.  My recommendation is to use separate databases if at all possible.