dpa.data.authenticationSubmit: Authetication of information to establish connection
In dpa: Dynamic Path Approach

In order to access any database, user is required to provide some information such as server type, server name, database name, database table, user name and password. This function is called to verify these information. If the information is found to be correct then the connection to the database will be established and the mentioned data will be loaded. Noyte that this process is surely going to be a time consuming step if the data is large. That is why the user must consider saving the data to the disk in the next step to avoid loading from database next time.