Just a question about gathering information from databases that you don't own, but are allowed access to.
Let's say, all airlines in Europe have a website of their own, and their website lists all of their destinations and special packages; which all show their prices; and this information is pulled from their database.
Hypothetically, lets say I built a website that gathers all airlines destinations and special package prices from their website's/database's and gathers them into one list.
What are all the ways one could go about doing this?
(Note, I am not actually attempting this, I just want to find out more information on it).
I believe www.zuji.com.sg does have a system like this.