在C＃中有效地连接Oracle和SQL Server中的两个表

So I have two systems I often have to join together to display certain reports. I've got one system that stores metadata on documents that is stored in SQL Server, usually by part number. The list of part numbers I would want to get documents for come from an Oracle table in our ERP system. My current method goes like this:So I have two systems I often have to join toge