You store all of your photographs on a website that uses a database to store the photos users post. what is this type of database called?

CODABA (Collaborative Database)

Explanation:

A CODABA (Collaborative Database) is one in which users from various applications could have access to either indirectly or not. It is designed to, among other things;

1. help save cost of developing or creating another database of similar functionality,

2. improve team work thereby optimizing project management.

So when you store your photographs on a website that uses a database to store the photos users post, it is a form of collaborative database.

Hope this helps!