if not exists (select * from sys.syscolumns where name = 'ServerSettings' AND id = object_id(N'dbo.DatabaseInfo'))
    alter table dbo.DatabaseInfo
    add ServerSettings nvarchar(max) null
        ,BadPasswords nvarchar(max) null
        ,DataVersion int not null constraint DF_DatabaseInfo_DataVersion DEFAULT(0)
        ,DataSourceSettingModifiedLoggedUserName nvarchar(256) null
        ,DataSourceSettingModifiedUserName nvarchar(256) null