Dear users.. I have fastly created a table in a postgresql database.. some columns where edited by hand (columns A, B, C), and some others (columns D, E, F) have been calculated as a result of mathematical equation (where the factors are the A, B, C columns).... now I simply need to change some values in the A, B, C columns and I would like to obtain the correct values in the D, E, F column... I know that this is a tipical problem of a spreadsheet but how can I solve it with a DBMS?? there a way to impose some constrain, also after the table is already filled with values?? I need only some suggestions to start.. then I can go on by myself!! thank you very much Ivan
-- Ivan Marchesini Department of Civil and Environmental Engineering University of Perugia Via G. Duranti 93/a 06125 Perugia (Italy) e-mail: [EMAIL PROTECTED] [EMAIL PROTECTED] tel: +39(0)755853760 fax: +39(0)755853756 ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings