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ITIS 1210 Introduction to Web-Based Information Systems

ITIS 1210 Introduction to Web-Based Information Systems. Chapter 43 Shopping on the Internet. Introduction. How has the Internet revolutionized shopping? Convenience Comfort Selection Online shopping possible because of encryption techniques No one can read except intended recipient

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ITIS 1210 Introduction to Web-Based Information Systems

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  1. ITIS 1210Introduction to Web-Based Information Systems Chapter 43 Shopping on the Internet

  2. Introduction • How has the Internet revolutionized shopping? • Convenience • Comfort • Selection • Online shopping possible because of encryption techniques • No one can read except intended recipient • Primarily used to scramble credit card information

  3. Introduction • Most shopping information contained in online databases • Data about items for sale • Price • Description • Options (colors, sizes, etc.) • Special offers

  4. Introduction • HTML pages created dynamically • “On the fly” • Advantage is • Company doesn’t need huge set of Web pages that contain every product they offer • Customers don’t have to wade through huge numbers of information they don’t care about – in order find what they’re looking for • Thousands of pages don’t have to be changed every time a product changes

  5. Introduction • Databases also contribute to order fulfillment • Your credit card information is checked • By comparing your order amount with your bank’s financial database • Updates requests to warehouse to package and ship your order • Updates request to shipper to pick up and deliver your order • Updates warehouse inventory, accounts receivable, etc.

  6. Introduction • Cookies are used to • Personalize your experience • Manage your shopping cart

  7. How Online Buying Works • Customer goes to a store’s Web page • Searches for product • Online database participates at back end • HTML pages created on-the-fly • Delivered to customer • Provides credit card information • Via secure site where encryption is used • Fill out a form

  8. How Online Buying Works • Submit button cause several actions • Form information encrypted • What you’re buying • How you’re paying • Sent to company’s transaction server • Financial details verified with bank or credit card company • Transaction OK • Update your credit card balance!

  9. How Online Buying Works • Your order verified back to you • Thank you for your order • Request to warehouse • “Send XXX to YYY” • Doesn’t have to be company’s warehouse • Could be third party direct sales • Order sent to you

  10. How Online Shopping Carts Work • Usually, customer must register before using online shopping services • Personal information • Name • Address • Sometimes financial data • Credit card number & expiration data • Bank data • User’s data stored on company machine

  11. How Online Shopping Carts Work • Cookie placed on user’s machine • Identifies user with specially coded data only company computers can understand • User browses company site • Decides to buy something • Places it in virtual “shopping cart” • Information on item sent to company’s Web server • Updated cookie placed on user’s machine

  12. How Online Shopping Carts Work • Updated cookie now contains information on everything in the shopping cart • Multiple items can be “held” within one cookie • Ready to checkout is multi-step process • User views shopping cart • Site reads cookie • Builds page with all items on it • Sends page to user • User clicks some kind of “commit” button • Possibly supplying new credit card/bank information

  13. How Online Shopping Carts Work • At checkout • Back-end processes kick off • User account debited for amount of purchase • Request to warehouse/supplier to deliver • Warehouse inventory updated • Shipper notified • Company’s books updated • New cookie placed on customer’s machine • No items in cart or • Cookie expires

  14. How eBay Sells Everything • eBay maintains four data centers • Sacramento, CA • Two in Santa Clara, CA • Denver, CO • This ensures site is always up & running • Mirrors of each other • Same information maintained in each • Connected via SONET • Synchronous Optical Network

  15. How eBay Sells Everything • Each data center runs Windows Server software • Your searches go to special search servers • Sun Microsystems hardware • Search servers send request to special database servers • Running Oracle database on a Sun SPARC computer

  16. How eBay Sells Everything • Database sends results of search back to the search servers • Search servers send results back to the Web servers • Web servers dynamically create a Web page with your results • And send it back to you

  17. How eBay Sells Everything • You browse results • Make a bid which goes to the Web servers • Web servers send bid information to application servers • Communicate the bid to the database servers • The bid is now visible to the next person who browses that item

  18. How eBay Sells Everything • Database flags indicate when the auction ends • Database servers send information about the winning bid to the application servers • Application servers communicates winning bid to Web server • Winning bid posted • Data goes to email servers to notify winner and seller

  19. How eBay Sells Everything • Servers keep track of which items winners • Have won • Have paid for • Have left feedback for • Winner and seller eventually rate the experience

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