.dad
From RemObjects Wiki
This is a Data Abstract Glossary topic
.dad files (essentially .dlls) are standalone drivers that can be loaded dynamically at runtime. To load the driver at runtime, use the LoadDriver method of the TDADriverManager Class. For example:
DriverManager.LoadDriver( 'DAFIBDrv.dad' );
This method is called LoadLibrary function.
See Also

Product: RemObjects Data Abstract
Available Editions: Data Abstract for .NET, Xcode, Delphi, Java and JavaScript