After trying to modify unique index names on tables in a database using the INFORMATION_SCHEMA views and getting nowhere fast, I delved into the system tables to see if they would shed any light on how to do it. This was even more confusing as it’s not obvious how these tables fit together. If only there was a map of the relationships between the system tables. Well, there is - Microsoft helpfully supply one on their SQL Server website. Very useful.
I can't remember where I read it...
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