I have created a table in dynamic page , the firs two columns are information taken from the database, the third column I would like the user to input a value by adding a user input box, such that the inputted value by user will be saved in the database. How can I achieve that? is it possible?
if you wanted to do something inside the table itself, then you would be better with a repeater as Yisrael as shown here with inputs for a repeater tutorial.
https://www.wix.com/corvid/forum/corvid-tips-and-updates/example-input-repeaters
However, if you are just wanting users to fill in a user input and then have that input shown in the table itself, then simply have a user input setup that gets saved to the dataset that the table is pulling the info from.
Then after the user input is saved into that dataset, simply have the dataset refresh itself (you might have to refresh the page in your code too), so that the table is updated with the new added data and it displays it in the table.
With the dynamic page, if the user is a logged in member then you can just have the dataset show the users own inputs only.