Too Many Tables for Similar Types of Data

In this video, I'll show you how to consolidate your different types of data into few tables. Don't create tables for every different "type" of person or business you deal with when one would suffice.

Henry from Everett, Washington (a Platinum Member) asks: I've been building my database following your lessons. I run a travel agency. I've got tables set up for airlines, hotels, restaurants, and rental car companies. I also have a table for my customers who book trips through me. Sometimes I also have to invoice a hotel or a restaurant for package deals we set up. Would I also make a separate table for those invoices? I'd also like to track all of the contacts between any of my people and these companies or my customers. Do I need separate contact tables for each of these too? I'm really confused. 

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