Hi, Regarding a feature request for allowing setting Signed/Unsigned attribute by using central columns http://sourceforge.net/p/phpmyadmin/feature-requests/1608/. I have implemented it by adding an extra column named 'col_Attribute' in central columns table so as there would be no confusion regarding it but as quoted by Madhura on github https://github.com/phpmyadmin/phpmyadmin/pull/1511 there will be many problem regarding this. So I need suggestion if it is required to add a new column or it would be enough by just adding 'attributes' to the 'col_extra' column. Thanks and Regards.