Use the TADPhysADSDriverLink component to link the Advantage Database Server driver to an application. In general it is enough to only include uADPhysADS unit into your application uses clause. 

The TADPhysADSDriverLink component may be used to specify:

• VendorHome - the Advantage installation root folder;
• VendorLib - the name and optional path to the ACE32.DLL / ACE64.DLL (Advantage Client Engine) client library.
• DateFormat, Decimals, Epoch - default Advantage data format settings;
• DefaultPath, SearchPath - default Advantage table paths;
• Exact, ShowDeleted - default Advantage operation modes.

All properties have default values appropriate for most case. To have an effect all property changes must be performed before first connection through this driver or use the Release method.

TADPhysADSDriverLink = class(TADPhysDriverLink);

Configuring Drivers, Connect to Advantage Database Server