I use Extended Properties on databases and their objects all the time. They are a great way to include information about the object – I use them for versioning the database, detailing what a column is used for and so on. They can be a little tricky to set, but it’s really not bad once you learn how. Ken Simmons, a SQL Server MVP has a fantastic article here that explains more: http://cybersql.blogspot.com/2010/07/extended-property-awesomeness.html
Although it’s not as simple as I would like to set the properties using PowerShell, it’s really trivial to read them. I do this to make system documentation in an HTML page. Open a SQL Server 2008 Powershell provider (sqlps.exe) and CD to any “directory” of a database or tables, views, whatever. Then you can just type this:
DIR | select-object –property name, Extendedproperties
As always, do this on a test system.
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