Create PHP forms to carry out two different interactions with the attached database. For example, you might create some forms to order a product, post a review, find products that satisfy some criteria and so on. The user should "get something" out of the interaction, so just logging in is not an interaction.
Submit all necessary forms, plus any additional SQL to modify the database from the attached files. If necessary, add a note to indicate any additional steps that would have to be done to make things work, other than applying the attached SQL and putting the forms in the www folder.