c) To meet with their privacy policy requirements, the sports centre is required to provide an "unsubscribe" link on the page to allow users to opt out of the monthly newsletter. How could you implement the unsubscribe functionality? Describe any changes to the code and the database. [4 marks]

Question 3 Here is the main webserver code, named 'index.js': This question is about web application development. You are a middleware developer building a web application for a new sports centre called 'Lewisham Fitness', who have a pool and a gym. The centre requires an online form to allow new visitors to the site to sign up for the monthly newsletter. 13. var express - require ('express') 14. var bodyparser- require ('body-parser') 15. var mysq 1 - Yequire ('ANSWER4') You have written a node.js script with a route that adds data collected from a 'sign-up' form to a new user record in the database. 16. const app - ANSWER5 17. const port =8000 The form looks like this: 18. const db = mysq1, createconnection (f 19. host: 'localhost', 20. user: 'root', 21. password: 'password', database: 'ANSWER6' \begin{tabular}{l} Sign up for our monthly newsletter here: \\ Name: \\ Email: \\ \hline \end{tabular} 23. 11; The database is called LewishamFitness and the table is called 'users'. Here is the table creation script: Here is your code for the route handler in main.js