Protecting Database Assets From Administrators

Louis Davidson walks through which things are granted to administrators of different levels:

Own is a strange term, because really there is just one user that is listed as owner, but there are there are three users who essentially are owner level, super-powered users in a database:

1. A login using server rights, usually via the sysadmin server role (or a server permission to view all data)
2. The user dbo in a database, acquired either as a sysadmin, or as being the user listed as the owner of the database
3. Members of the db_owner database role

Sometimes, in the context of a database, these all start to blur together. But they are definitely all three independent things. Let’s write some code and see the differences, and one of the cases may be surprising to you. To do this, I will just be using the SELECT permission on a single table, but other rights will generally behave similarly. Note that another tool in your toolbox is Row Level Security in SQL Server 2016+. It is different, in that you can include a predicate that excludes the dbo, which you can read more about here in some of my earlier blogs.

Great read.

Related Posts

Using Have I Been Pwned In R

Maelle Salmon shows us how to use the HIBPwned library in R: The alternative title of this blog post is HIBPwned version 0.1.7 has been released! W00t!. Steph’s HIBPwned package utilises the HaveIBeenPwned.com API to check whether email addresses and/or user names have been present in any publicly disclosed data breach. In other words, this package potentially delivers bad news, but useful […]

Read More

Limitations Of Object-Level Security In Tabular Models

Teo Lachev gives us the skinny on object-level security in an Analysis Services Tabular model: Object-level security (OLS) is a frequently requested security feature when implementing semantic models. For example, a current project disallows some sales persons to see sensitive measures, such as Margin and Profit. In Multidimensional, modelers could use cell security to meet […]

Read More

Categories

March 2018
MTWTFSS
« Feb Apr »
 1234
567891011
12131415161718
19202122232425
262728293031