Add updated migrations

Author: Bastian Gruber

ch_08/migrations/20220509150516_questions_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS questions;

…ions/20220116194720_create_questions.sql …ns/20220509150516_questions_table.up.sqlch_08/migrations/20220116194720_create_questions.sql renamed to ch_08/migrations/20220509150516_questions_table.up.sql ch_08/migrations/20220116194720_create_questions.sql renamed to ch_08/migrations/20220509150516_questions_table.up.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS answers;

ch_08/migrations/20220514145724_answers_table.down.sql

@@ -1,7 +1,6 @@
--- Add migration script here
 CREATE TABLE IF NOT EXISTS answers (
     id serial PRIMARY KEY,
     content TEXT NOT NULL,
     created_on TIMESTAMP NOT NULL DEFAULT NOW(),
     corresponding_question integer REFERENCES questions
-);
+);