In the present time the key challenge is how to obtain a working application for solving user requirements as soon as possible. One option is to use Oracle APEX tool. In this thesis we introduce the process of developing a web application using Oracle APEX. In the beginning, we explain what Oracle APEX is, how it works, and also introduce the key concepts of developing a web application with this tool. This is followed by the description of the software development approach used by Oracle APEX called the rapid-application development (RAD). The result of the thesis is a working web application connected to the Oracle database. The application can be used for reviewing and multi-phase validation of accounts. At the end, we present our thoughts which include evaluation of the APEX tool and possible improvements.
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