The fields of Administrative Data are registered in table 'accountinfo_config', with 'ID', 'name', 'type', 'comment', 'show_order', ...
For their values for each hardware, you have the table 'accountinfo' with fields named as 'fields_xx' where xx is the value of column 'ID' from 'accountinfo_config'.
NB : be carefull when you update values of Administrative Data directly using sql command ...