This object knows specifically how to deal with articles, actually it knows only how to deal with articles.
Every class takes care of the processing of a single table in the database.
This is the main method in every class. The name with which the class was invoked, actually the value of the opening block. There is only one table called person in the database. CmdExe allows refering to these specific names, but needs to remember them to check if the opened block is closed afterwards. After this the statistics are updated and the current id is pushed onto the stack and the stack is printed.