With the growing internet era, it is also growing all the way to do various things, including trading via the internet. Online commerce or electronic commerce or known by the term e-commerce includes all transactional activities through electronic means, ranging from goods marketing, reservations, purchase, until payment, and can also continue to service and ministry.

Online sales transactions through the web media is now a trend among businessmen. not only small and medium business, large business like selling tickets by American airlines to use any part of this digital era technology.

Transactions using web media is certainly to be supported by a qualified database to store all transaction data, and other data required by the company. Entity Relationship Diagram (ERD) as one alternative to designing a database for the company, providing convenience in compiling a database of American airlines.com

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