OppiaMobile Server Data Structure
=====================================

The basic data structure (entity relationship diagram) of the OppiaMobile
server database is shown in the diagram below:


.. image::  images/oppia-erd-basic-2020-05-26.png


.. note::
   The tables shown here are those most likely to be useful for extracting
   data about users activity within courses etc. It does not include all the
   tables that are in the database, there are many 'administration' type tables
   that are not shown. 


.. toctree::
   :maxdepth: 2
   
   tables   
   queries