1. Week 6 Lecture Part 2 Databases in Electronic Commerce Samuel Conn, Asst. Professor

2. 2 In this lecture, you will learn: What electronic commerce (e-commerce) is How e-commerce affects the new economy About the different e-commerce styles About the Internet architectural components required to conduct electronic commerce About database design and implementation issues for electronic commerce applications What Extensible Markup Language (XML) is and why it is important

3. 3 Definition Bring new products, services, or ideas to market Support and enhance business operations (including sales of products/services over the Web) Generally identified with Internet use External evidence is corporate Web site Prime revenue source Not an end in itself What is Electronic Commerce?

4. 4 Changed business environment New economy Benefits Ability to provide quick and convenient comparison shopping 24X7X365 operations Global access Lower entry barriers Increased customer market knowledge Disadvantages Hidden costs Technology is not perfect Thin profit margins Security, loss of privacy, service levels, and legal issues E-Commerce Impact

5. 5 E-Commerce Styles Figure 14.1

6. 6 Managerial issues Establishing partnerships Suppliers Distributors Vendors Design and development of business plans Technological issues Hardware and software Well-planned architecture E-Commerce Architecture

7. 7 E-Commerce Architecture (Con’t.) Figure 14.2

8. 8 Internet Basic Services Internet TCP/IP Router WWW Web Page HTML Hyperlink URL HTTP Web Browser Web Server Web Site Static Web Page Dynamic Web Page FTP E-Mail News and Discussion Group Services

9. 9 Internet Basic Services Figure 14.3

10. 10 Internet Basic Services Figure 14.3

11. 11 Business Enabling Services Search Services Security Site Monitoring and Data Analysis Load Testing, Balancing, and Web Caching Usability Testing Personalization Web Development Database Integration Transaction Processing Content Management Messaging Wireless Device Support

12. 12 Security Procedures and technology uses Protection against accidental and intentional access Warrantee identity of transaction’s participants Buyer Seller Protect transaction data from unauthorized modifications during Internet travel Protect resources (data and computer) Customers’ personal data Privacy issues Property against criminal activities

13. 13 Sample E-Commerce Transaction Figure 14.4

14. 14 Payment Processing Digital Cash Digital equivalent of hard cash Digital certificates verify identity of transaction participants Low transaction costs Lack of customer acceptance Credit Card purchasing Most common for online purchasing Secure Electronic Transaction (SET) Electronic wallets

15. 15 Don’t reinvent the wheel No need for ‘new’ design techniques Scope Facilitate sales of products and services Show products and services Conduct basic sales transactions Customer service Product returns Web customer profiling Database Design for E- Commerce

16. 16 Meta-language Represents and manipulates data elements Facilitates exchange of structured documents over the Web World Wide Web Consortium (W3C) published standard definition in 1998 Allows definition of meta-tags to describe data elements Extensible Markup Language (XML)

17. 17 XML Characteristics Allows definition of new tags Case sensitive Tags must be well-formed Proper nesting required Can use to enter comments XML or xml prefixes reserved for XML tags only Not a replacement for HTML

18. 18 B2B exchanges Legacy system integration Web page development Database support Database meta-dictionaries XML databases XML services XML Applications