I have SSMS 2008 (version - 10.0.2531.0)
Back end Microsoft SQL Server 2008 (SP1) - 10.0.2723.0 (X64)
I have DB_ddlAdmin role on a database
I can create/alter a table via sql script.
In the SSMS Database Designer (GUI), When I right click on the database >> Tables and select New Table I get the following error.
"You are not logged in as Database Owner or System Administrator. You might be able to save chnages..."
Then i get a screen where SSMS asks me to enter column names. When I enter column names and I can click on Save I get "Not a Table Owner" error. The table does get created but after that i can not alter it via Database designer (I can alter it via a alter SQL).
So Long story short, I can create tabels via DDL sql but not via the SSMS database designer. This from a technical view point might not be a big deal but for a business person not knowing SQL syntax will be a critical issue.
This was reported back on 06/2009 but can't imagine it still being a active bug