You should have a postrges running with credentials:
db: neon username: admin password: g@m3adm1n
Create the following tables:
create table pictures (
id serial primary key,
pic_url varchar (256)
);
create table tags (
id serial primary key,
tag varchar (256)
);
create table picture_tags (
pic_id int,
tag_id int
);
insert into pictures (id, pic_url) values (3, 'http://www.lovethispic.com/uploaded_images/22349-Neon-Lights-Coca-cola.jpg');