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Da http://blechie.com/wtilton/archive/2007/ 24/08/303.aspx
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MySQL:
ColumnName ENUM('upload', 'open', 'close', 'delete', 'edit', 'add')
DEFAULT 'open'
SQL Server:
ColumnName varchar(10)
CHECK(ColumnName IN ('upload', 'open', 'close', 'delete', 'edit', 'add'))
DEFAULT 'open'