DataSnap provides multi-tier database capability to Delphi applications by allowing client applications to connect to providers in an application server. 

Install DataSnap along with a multi-tier application using InstallAware (or other CodeGear-certified installation scripting utility). See the DEPLOY document (found in the main Delphi directory) for details on the files that need to be redistributed with an application. Also see the REMOTE document for related information on what DataSnap files can be redistributed and how.