Instead of the solution referencing external XML data sources, any XML data can be embedded directly into the design file. This option is perfect for smaller data sets that are needed on the client side, such as a list of choices for a combo-box or other static data. This data is then transmitted to the client as a part of the overall design file and is always instantly available on the client side every time you run the app. So no additional data transfers between client and server are needed.
To embed a data source in the design file, right-click the data source and select Embed XML in Design File.