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Basic SQL Server Security concepts: ownership, CONTROL, TAKE OWNERSHIP
I realized today that while I have discussed earlier object permissions , I have not gone into the details of object ownership. I want to cover the following here: ownership of objects, how it can be changed, and the relatively new permission CONTROL Read More...
Basic SQL Server Security concepts: SIDs, orphaned users, and loginless users
I am grouping here two topics (orphaned users and loginless users) that are actually very different, but I have often seen confusion between them, so I am covering them together in an attempt to dispel that confusion. In a previous discussion of logins Read More...
Basic SQL Server Security concepts - ownership chaining: good and evil; schemas
At some point during SQL Server's history, its designers must have confronted the following problem: how to give someone permission to see parts of a table without giving him any permission on the table? Slices of a table are easily defined using views, Read More...
Basic SQL Server Security concepts - permissions and special principals: sa, dbo, guest
In a previous post , I talked about the various types of principals in SQL Server. Let's have a further look in this post at permissions and at some of the hardcoded principals that ship with any installation of SQL Server. Permissions are what allow Read More...

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