WEBDEV Concepts

184 Part 5: Databases 2.2 Via a Webservice WEBDEV allows you to createWebservices. TheWebservice is installed on theWeb server and the WEBDEV Application Server allows you to use it. The Webservice can be used to retrieve the data entered in the site. Web server - WEBDEV site - Database - WEBDEV Webservice Company headquarters - WINDEV application (Back Office) Run the Webservice by HTTP requests Transmit the data (strings, XML, ...) The Webservice located on the Web server is queried on a regular basis by the HTTP requests run by the Back Office application. The data is returned in XML format, as strings (or other) and processed by the WINDEV application. Benefits : • Solution that can be easily implemented. • No additional executable is required on the server. No additional session is run on the server. Drawback : Unidirectional data retrieval: no data update toward the server. This solution can be used on a shared server . 2.3 Via FTP: WEBDEV allows you to regularly save the data files of the WEBDEV site. This backup can be transferred by FTP to the company headquarters. Then, all you have to do is: • retrieve the compressed backup of the data files. • decompress the files (via a WINDEV application). • process the data found in the files. Benefits : • Solution that can be easily implemented. • No additional executable is required at the hosting company. Drawback : All data files found in the application are retrieved. This solution can be used on a shared server .