Just a quick correction... The article stated "These values are stored as extended properties. The user can add as many extended properties as they like. They are stored in a hidden table that you will not see in any database on the SQL Server."
This isn't accurate, the extended properties are stored in sysproperties and I have found it very useful to be able to query this table directly without using the built-in functions.
I know that one of the cardinal rules is that you don't directly modify or query data in the system tables, but the functions that MS provides for this purpose are such a kludge that I entirely disregard this advice for extended properties.
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If most people are not willing to see the difficulty, this is mainly because, consciously or unconsciously, they assume that it will be they who will settle these questions for the others, and because they are convinced of their own capacity to do this. -Friedrich August von Hayek
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