universiti teknologi malaysia - Faculty of Electrical Engineering - UTM

36Validating Module has to be dynamic, where the lecturer can read the fileand validate the form at the same window in their internet browser. To implementthis interface, HTML frame command functions were used to split the internetbrowser allowing the browser to view validating page and form application pages.Figure 5.3: View form online and Validate5.2.3 Implementation of file retrieving modulesThe form submission subsystem must allows the user to retrieve the data orfile that were uploaded to the database.In this module the most important data tofetch from the database is stored in the mediumblob datatype column, File. Thiscolumn stores the data of the PDF file uploaded in the binary format.This module involves calling header function in HTML command to fetchand translate the data to a data type that can be comprehend by the Internetbrowser.For downloading function, the HTML header funtion is used to get the filename and file size. If this command is not included the downloading file will notworks.