Thank you for writing to us.
1) You can use MS Access mdb format for your application. The ADO.NET and Windows Forms controls have full native support of this database.
2) If you use MS Access database you must deploy only your application assemblies and mdb database file.
3) A purchased license of the Telerik RadControls for WinForms suite includes a run time royalty-free license to redistribute the controls in your own solutions. You can freely use and redistribute all of the products in the suite to build your own solutions, and your end users are not required to purchase their own licenses for the controls. More information for deployment you can find in our online documentation.
Do not hesitate to contact us if you have further questions or issues.
the Telerik team