This is just a little reminder for myself as much as for anyone else. There's a great resource online at http://www.connectionstrings.com/ that lists the syntax for hundreds of different types of data sources (SQL Server, Oracle, Excel, Active Directory, etc.) complete with examples and general rules/guidelines for constructing them. If you're ever in a situation where you need to build a connection string without a GUI to help you, I've never seen a better reference. Check it out.