Connection strings for UDL
Although it is possible to supply connection information in a Universal Data Link (UDL) file you should avoid doing so. UDL files are not encrypted and expose connection string information in clear text. Because an UDL file is an external file-based resource to your application, it cannot be secured by the application.
OLE DB providers for UDL
Find solutions and post questions regarding connection string related issues.Forum for UDL