**Task:** One of De Monne's database engineers is having issues rebuilding the production database. He wants to know the name of one of the foreign keys on the loans database table. Submit one foreign key name as the flag: flag{foreign-key-name} (can be ANY foreign key).
In the previous challenge, I got around installing a software to manage DB on my computer and I've just used a text editor.As I am preceding in the sql challenges, it is time to install software to be able to make sql requests.
First, I installed sqlite but I wasn't able to import the database. So, I've decided to launch a MySQL DB and phpMyAdmin using docker-compose.
```yamlversion: '3' services:  db:    image: mysql:latest    container_name: db    environment:      MYSQL_ROOT_PASSWORD: password      MYSQL_DATABASE: app_db      MYSQL_USER: user      MYSQL_PASSWORD: password    ports:      - "6033:3306"    volumes:      - dbdata:/var/lib/mysql  phpmyadmin:    image: phpmyadmin/phpmyadmin    container_name: pma    links:      - db    environment:      PMA_HOST: db      PMA_PORT: 3306      PMA_ARBITRARY: 1    restart: always    ports:      - 8081:80volumes:  dbdata:```
Then, I used phpMyAdmin [http://localhost:8081/](http://localhost:8081/) in my browser to manage the DB.By default, we cannot import more than 2 Mb sql files using phpMyAdmin. A simple get around is to zip the sql file.
Then in order to found foreign keys on the loans table, I checked the structure page of that table on phpMyAdmin. (You can also use a text editor to check that.)`fk_loans_loan_type_id`, `fk_loans_employee_id` and `fk_loans_cust_id` are all valid solutions.
![foreign keys](https://raw.githubusercontent.com/hhassen/writeup_deadface_2021/main/images/loan_fk.png)