DTSConn.dll

DTSConn.dll is the Data Transformation Runtime Connections DLL. I've found it installed under

• %DevEnvDir%\CommonExtensions\Microsoft\SSIS\nnn\Binn
• %programfiles%\Microsoft SQL Server\nnn\DTS\Binn

This DLL manages the following connection types:

• ADO
• ADO.NET
• cache (.caw files)
• Excel files
• Files (files or folders)
• Flat files
• FTP connections
• HTTP connections
• Analysis Services connections
• «Multiple files»
• «Multiple flat files»
• ODBC
• OLEDB
• SQL Server Compact connectsion (SQLMOBILE)