E-commerce

What is transaction?
Transactions are exchanges that occurs when one economic entity sells a product or service to another entity.
A transaction occurs between a server and client. Server is the producer of services/products and client is the consumer of services/products.
While transactions are conducted via e-devices, they may be transported using either traditional physical shipping channels such as ground delivery services or digital mechanisms such as downloading a product from the Internet

Types of E-commerce systems :
B2B (Business-to-Business)
B2C (Business-to-Consumer)
C2B (Consumer-to-Business)
C2C (Consumer-to-Consumer)

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