Converting the Back End data file into SQL Server and running as a Client Server
This is the full version of Microsoft's SQL Server.
A Microsoft Access solution is great for tactical needs, these are for areas where ongoing requirements change on a frequent basis. These changes are often driven by external bodies. In such an environment it is important to be able to react quickly and be able to implement the changes. Access is perfect for this. And it seems that these days the rate of changes is increasing all the time. In such an environment a .NET solution has too long a development cycle and costs too much to implement these changes.
A .net solution is better suited for strategic and longer term solutions where the requirements are more stable.