Ed & Eg frequently host free seminars for customers and members of the community in their conference room. These seminars are usually sponsored by another organization. Ed & Eg would like a calendar on their website that shows each seminar on the date that it is to take place, along with a link so that visitors can read more about the topic of a given seminar as well as who the sponsor company is.
One way you can design such a calendar is to create an events channel, which contains all the information regarding both the event and the event sponsor. This would work, but because a single event sponsor is often associated with more than one seminar, this design would result in you having to include the same information about the same sponsors in more than one channel entry. For example, if Anytown Bank sponsors five seminars, there would be five entries where you would have to provide information about Anytown Bank.
Related Entries is a way to reduce repetition...