In the design below we will use a series of flags in the questions table to indicate what type of question it is. We also indicate the level of the question. The answer table is linked to the question table via the foreign key. The complet test table will hold the results of complet tests taken. Only one incomplete test is allowed per user. In the incomplete test table we will link the question back to the questions table (oops I missed the relationship line), which will link to the possible answers we record the answers give by the user in a string column of the incomplete test table.
