Web Pages, Web Sites, and Ecommerce

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CHAPTER 6

• Web Pages, Web Sites, and E-commerce

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The Web, the Net, and Hypertext
Web browsers and Web servers exchange
HTTP messages.
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HTML and XHTML
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Web Browsers

• Help you access Web pages
• Upgrade to new browser versions as they become
  available
• Popular browsers include
• Netscape Navigator
• Internet Explorer
• Opera
• Firefox

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Helper Applications, Plug-ins, and Players

• Helper applications extend the browsers ability
  to work with file formats
• A plug-in is a type of helper application
• A player is any helper application or plug-in
  that helps a browser display a particular file
  format

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Web Servers

• Includes HTTP software to fulfill HTTP requests
• Server farms can handle thousands of requests
  each second
• Excessive demand can crash a Web server

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Cookies

• Small chunk of data generated by a Web server and
  stored on your computers hard disk
• Your computer does not have to accept cookies

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Section D E-commerce

• E-commerce Basics
• Online Shopping
• Shopping Carts
• Transaction Privacy and Security

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E-commerce Basics

• Business transactions conducted electronically
  over a computer network
• B2C (business-to-consumer)
• C2C (consumer-to-consumer)
• B2B (business-to-business)
• B2G (business-to-government)

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E-commerce Basics

• Enhances traditional business models
• Styles of online advertisements
• Banner ad
• Pop-up ad
• Click-through rate
• Ad-blocking software prevents ads from
  appearing on screens

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Online Shopping
In a typical shopping session, you connect to an
online storefront and use navigation controls to
browse through the merchants catalog. As you
browse, you can drop items into your electronic
shopping cart. At the checkout counter, you enter
the information necessary to pay for the items
you selected.
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Shopping Carts
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Shopping Carts
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Transaction Privacy and Security

• Web sites can surreptitiously collect data about
  your browsing and purchasing habits
• Spyware surreptitiously gathers information
• Ad-serving cookies track your activities at any
  site containing banner ads from a third party
• Clear GIFs can set cookies to third party sites

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Transaction Privacy and Security

• Packet sniffers monitor data as it travels over
  networks
• You should use a secure connection when involved
  in an electronic transaction
• SSL (Secure Sockets Layer)
• S-HTTP (secure HTTP)

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Transaction Privacy and Security

• Merchant databases may be accessed without
  authorization
• Dishonest employees
• Fake storefronts may be used to collecting data
• Enter URLs correctly
• Hackers may be able to steal credit card numbers
  from your hard disk

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Transaction Privacy and Security
An electronic wallet can transfer your billing
and shipping information to a participating
sites e-commerce Web server when you check out.
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Transaction Privacy and Security

• Person-to-person payments are an alternative to
  credit cards
• The payment service is the only entity that sees
  your credit card number
• Service is in its infancy