TCP

Transmission Control Protocol

breaks information into packets

manages transfer of packets between computers

IP

Internet Protocol

Defines how the packet must be formed

Contains destination address

WWW

World Wide Web

• One of the most powerful uses of the internet.
• A system of Internet servers that support documents formatted in HTML, which supports links to other documents, as well as graphics, audio, and video files.

1. precursors to e-commerce include

• Baxter Healthcare
• Electronic Data Interchange
• French Minitel
• CALS

1. None of these system had functionality of Internet
2. The Beginning of E-commerce to 1995

Example: Yahoo.com, MySpace.com

Revenue Source: Fees from advertisers in exchange for advertisements

Examples: WSJ.com, consumerreports.com

Revenue Source: Fees from subscribers in exchange for access to content or services 

Example: eBay.com, E-trade.com

Revenue Source: Fee(comissions) for enabling or executing a transaction

Example: Amazon.com, Gap.com, iTunes.com

Revenue Source: Sales of goods, information, or services

Example: MyPoints.com

Revenue Source: Fees for business referrals

• Click- and -Mortar(Walmart.com)
• Click Only(Amazon.com)
• Virtual Company(Priceline.com, Reverse pricing)

• Product Benefits
• Unlimited number and variet products
• Easier comparison shopping
• Place Benefits
• Anywhere, anytime
• Purchasing on global scale
• Price Benefits
• No expenditures for physical retail space

E-Tailing Disadvantages

• Product delivery drawbacks
• delay between product order and delivery
• Direct product experience drawbacks
• Lack of sensory
• Lack of the social element

• Forward
• eBay.com, uBid.com
• Reverse Auctions
• Priceline.com

• Electronic transactions using wireless mobile devices
• mobile networks
• smart phones

• Information systems focusing on improving upstream information flows with two main objectives
• to accelerate product the development and to reduce costs associated with procuring raw materials, compents, and services from suppliers

• An Information System that integrates business activites across departmental boundaries, including planning, manufacturing, sales, marketing, and so-on.

New more affordable alternative to EDI

Advantages

• Improved timelines and accuracy of information
• low cost of adoption 
• specific user training required

Business to employee electronic commerce

internet based private network using Web technologies

(Boeing)

Paid Inclusion

• Fee paid to the search engine to appear in the results

• Credit Card 
• Online transactions without sharing private information with actual seller
• Pay Pal-can send and recieve money if you have an e-mail account
• Google Checkout-linked with Google Search

• corrupt and destroy data
• destructive code can erase a hard drive 
• Worms
• Variation of a virus
• replicate endlessly across the Internet
• Servers can crash

Spyware

• Within a Web Site
• Gathers information about a user
• Credit Card information
• Behavior tracking for marketing purposes
• Eats up computer's memory and network bandwidth

Adware

• Special kind of spyware
• Collects information for banner ad customization

• Junk e-mail
• Advertisements of products and services
• eats up storage space

• Attempts to trick users into giving away credit numbers
• Phony messages

• Messages passed to a Web browser from a web server
• used for Website customization

• Connection constructed dynamically within an existing network
• Secure tunnel
• Encrypted information

• Packet Filter-each packet examined
• Application-level control-security measures only for certain applications
• Circuit-level control-based on certain type of connection
• Proxy server-firewall acts as the server and intercepts all messages; Network Address Translation

• Message  encoded before sending
• Message decoded when received

• Authentication-proving one's identity
• Privacy/confidentiality- only intended recipient can read a messade
• Integrity-assurance of unaltered message
• Nonrepudiation-use of digital signature

• Sender and recipent use the same key
• Cons: Management problems

Public Key Technology

• Asymmetric key system
• Each individual has a pair of keys

• Public Key-freely distributed
• Private Key-kept secret

• Secure Sockets Layer(SSL)
• Developed by Netscape
• Popular public-key encryption method
• 1977-RSA
• Limited use by organizations

• Most ethical debates relate to
• Information privacy
• information accuracy
• information property
• information accessibility

• Information you might want to keep private
• Social Security number
• Medical history
• Family history
• Identity theft
• Biometrics for better protection

Information Accuracy

• Ensuring of the authenticity and fidelity of information
• High costs of incorrect information
• Banks
• Hospitals
• Difficult to track down the person who made the mistake

• Patent
• Copyright

• The gap between those individuals in our society who are computer literate and have access to information resources such as the Internet and those who do not
• Factors
• Developed and developing countries
• Gender
• Education
• Age
• Race

Systems analysis and design(SAD)

• A model describing the life of an information system from conception to retirement
• Arrows flowing down represent flow of information
• Arrows flowing up represent the possibility of returning to a prior phase

• Arguably the most important activity
• Requirements collected from
• Users
• Managers
• Business processes
• Documents
• System requirements collection techniques
• Interviews 
• Questionnaires
• Observations
• Document Analysis

Critical Success Factor(CSF)

• Textual notation for describing programming code
• Similar to actual programming code

• In house Programming
• Outsourcing
• Processing and testing should occur in parallel

• Developmental 
• Testing the correctness of individual modules and the integration of multiple modules
• Alpha
• Testing of overall system to see whether it meets design requirements 
• Beta
• Testing of the capabilities of the system in the user environment with actual data

• Information system documentation
• Details of the inner workings of the system
• written by programmers
• User-related documentation
• Written by professional technical writers
• User and reference guides
• User training and tutorials
• Installation procedures and troubleshooting suggestions

Customer Relationship Management(CRM)

• A corporate-level strategy designed to create and maintain lasting relationships with customers by contrating on the downstream information flows through the introduction of reliable systems, processes, and procedures

• Upstream activities
• Improvement of business processes spanning organizational boundaries
• Adopted by large organizations
• Collaboration with suppliers
• Ability ro complete more effectively in the market place
• Cost reduction
• Increased responsiveness to market demands
• Focus on upstream information flows
• Acceleration of product development
• Reduction of costs of raw materials procurement