Building E-Commerce and E-Learning Models Hassanin M.

Building E-Commerce and E-Learning Models Hassanin M. Al-Barhamtoshy [email protected]

Electronic Commerce (ECommerce) Commerce refers to all the activities the purchase and sales of goods or services. Marketing, sales, payment, fulfillment, customer service Electronic commerce is doing commerce with the use of computers, networks and commerce-enabled software (more than just online shopping) 1/7/2007 CS 483 2

Brief History 1970s: Electronic Funds Transfer (EFT) Used by the banking industry to exchange account information over secured networks Late 1970s and early 1980s: Electronic Data Interchange (EDI) for e-commerce within companies Used by businesses to transmit data from one business to another 1990s: the World Wide Web on the Internet provides easyto-use technology for information publishing and dissemination Cheaper to do business (economies of scale) Enable diverse business activities (economies of scope) 1/7/2007 CS 483 3

E-commerce applications Supply chain management Video on demand Remote banking Procurement and purchasing Online marketing and advertisement Home shopping Auctions 1/7/2007 CS 483 4

Ecommerce infrastructure Information superhighway infrastructure Internet, LAN, WAN, routers, etc. telecom, cable TV, wireless, etc. Messaging and information distribution infrastructure HTML, XML, e-mail, HTTP, etc. Common business infrastructure Security, authentication, electronic payment, directories, catalogs, etc. 1/7/2007 CS 483 6

The Main Elements of Ecommerce Consumer shopping on the Web, called B2C (business to consumer) Transactions conducted between businesses on the Web, call B2B (business to business) Transactions and business processes that support selling and purchasing activities on the Web Supplier, inventory, distribution, payment management Financial management, purchasing products and information 1/7/2007 CS 483 7

Advantages of Electronic Commerce Increased sales Reach narrow market segments in geographically dispersed locations Create virtual communities Decreased costs Handling of sales inquiries Providing price quotes Determining product availability Being in the space 1/7/2007 CS 483 8

Disadvantages of Electronic Commerce Loss of ability to inspect products from remote locations Rapid developing pace of underlying technologies Difficult to calculate return on investment Cultural and legal impediments 1/7/2007 CS 483 9

The process of ecommerce 1. Attract customers Advertising, marketing 2. Interact with customers Catalog, negotiation 3. Handle and manage orders Order capture Payment Transaction Fulfillment (physical good, service good, digital good) 4. React to customer inquiries Customer service Order tracking 1/7/2007 CS 483 10

Web-based E-commerce Architecture Tier 1 Tier 2 Tier 3 Tier N DMS Client 1/7/2007 Web Server Application Database Server Server CS 483 11

E-commerce Technologies Internet Mobile technologies Web architecture Component programming Data exchange Multimedia Search engines Data mining Intelligent agents 1/7/2007 Access security Cryptographic security Watermarking Payment systems CS 483 12

Infrastructure for Ecommerce The Internet system of interconnected networks that spans the globe routers, TCP/IP, firewalls, network infrastructure, network protocols The World Wide Web (WWW) part of the Internet and allows users to share information with an easy-to-use interface Web browsers, web servers, HTTP, HTML, XML Web architecture Client/server model N-tier architecture; e.g., web servers, application servers, database servers, scalability 1/7/2007 CS 483 13

E-Commerce Software Content Transport pull, push, web-caching, MIME Server Components CGI, server-side scripting Programming Clients Sessions and Cookies Object Technology CORBA, COM, Java Beans/RMI Visual Studio .NET 2005 (ORCAS, ASP.NET, etc) Technology of Fulfillment of Digital Goods Secure and fail-safe delivery, rights management 1/7/2007 CS 483 14

System Design Issues Good architectural properties Functional separation Performance (load balancing, caching) Secure Reliable Available Scalable 1/7/2007 CS 483 web 15

Creating and Managing Content What the customer see Static vs. dynamic content Different faces for different users Tools for creating content Multimedia presentation Integration with other media Data interchange HTML, XML (Extensible Markup Language) 1/7/2007 Cs 483 16

Cryptography Keeping secrets Privacy: interceptor cannot use information Authentication: sender’s identity cannot be forged Integrity: data cannot be altered Non-repudiation: sender cannot deny sending How to evaluate cryptography Secret key (symmetric) cryptography; e.g., DES Public key (asymmetric) cryptosystems; e.g, RSA Digital signatures, digital certificates Key management; e.g., PKI 1/7/2007 CS 483 17

Public-Key Cryptography Encrypting and decrypting a message using public-key cryptography. 18

Security Concerns about security Client security issues Server security issues Security policy, risk assessment Authentication methods Something you know: passwords Something you have: smart card Something you are: biometrics Firewalls, proxy servers, intrusion detection Denial of service (DOS) attacks, viruses, worms 1/7/2007 CS 483 19

Payment Systems Role of payment Cash properties: wide accept, convenient, anonymity, untraceability, no buyer transaction cost Online credit card payment, Smart Cards Secure protocols: SSL, SET Internet payment systems Electronic cash, digital wallets Micro-payments Wireless devices 1/7/2007 CS 483 20

Transactions Processing Transactions and e-commerce Overview of transaction processing Transaction processing in e-commerce Keeping business records, audit, backup High-availability systems Replication and scaling Implementation 1/7/2007 CS 483 21

Other System Components Taxes Shipping and handling Search engines Data mining Intelligent agents Inventory management, enterprise resource planning (ERP) Customer relation management (CRM) 1/7/2007 CS 483 22

Auction (public sale) Model eBay home page. (These materials have been reproduced by Prentice Hall with the permission of eBay, Inc. COPYRIGHT EBAY, INC. ALL RIGHTS 23 RESERVED.)

Public Sale (Auction) Model Placing a bid on eBay. (These materials have been reproduced by Prentice Hall with the permission of eBay, Inc. COPYRIGHT EBAY, INC. ALL RIGHTS RESERVED.) 24

Course Outline Overview of e-commerce The Internet and the WWW E-commerce software building blocks and tools Scalability, high-performance servers, web caching Basic cryptography Security, watermarking, firewalls Payment systems Current and future directions 1/7/2007 CS 483 25