conferences calendar

I created for this project I install the library psycopg2 5 class in 3 folder "controler" "model" an "view" I create class "connection" for connect program with bdd with "psycopg2" I instantiate objets and attributes I use method for hydrate attributes after display them I also create two tables in bdd with for table "speakers" 6 column with one colonne "status true" I create in table "conferences" 7 column with one column "personnid" related with column "personid" in table "speakers" I use cascade method for delete champ in "speakers" table and "conferences" table
i use jointure for display elem of two tables in bdd. And i also use command pg_dump for create an sql files for my bdd for add them in project in git hub.