ICE-M1151: E-Commerce System Dr. Md. Hasnat...

59
1 ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References Electronic Commerce, from Vision to Fulfillment by Elias M. Awad

Transcript of ICE-M1151: E-Commerce System Dr. Md. Hasnat...

Page 1: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

1

ICE-M1151: E-Commerce System

Dr. Md. Hasnat Kabir

References

Electronic Commerce, from Vision

to Fulfillment by Elias M. Awad

Page 2: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

2

What is e-Commerce

• Selling goods and services on the retail level

with anyone, anytime and anywhere via

Internet.

• Brings the universal access of the Internet to

the core business processes.

• E-Commerce assists in

– Generating demand for products and services.

– Improving order management, financial transactions

and logistics.

• Successful e-Commerce should result in reduction of

transaction costs and streamlining of business

processes.

Page 3: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

There are several ways of looking at e-

commerce:

• 1 .From communication perspective: it is the

ability to deliver products, services, information

or payments via networks like the internet.

• 2. From an interface view: e-commerce means

information & transaction exchanges. e.g. B2B

(business - to business), B2C (business to

consumer), C2C (Consumer – to consumer)

3

Page 4: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• 3 .As a business process: e-commerce means

activities that support commerce electronically

by networked connections. eg- business

processes like manufacturing, inventory &

business – to – business processes like supply

chain management are managed by the same

networks as business-to-consumer processes.

• 4 .From an online perspective: e-commerce is

an electronic environment that allows sellers to

buy and sell products, services and information

on the internet. The product may be like cars or

services like news and consulting.

4

Page 5: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• 5. As a structure: e-commerce deals with

various media: data, text, Web pages, Internet

telephony, and Internet desktop video.

• 6 .As a market: e-commerce is a worldwide

network. A local store can open a Web

storefront and find the world at its doorstep-

customers, suppliers, competitors and payment

services of course, and advertising presence is

essential.

5

Page 6: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

6

Examples of e-Commerce

• Credit card authorisation

• Online travel reservations

• Global wire funds transfer

• Point of Sale (POS) transactions

• Electronic banking

• Fund raising

• Auctioneering

Page 7: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

7

What is e-Business

• Conduct of business on the internet, in supply-

chain planning, tracking, fulfillment, invoicing

and payment.

• It include buying and selling as well as serving

customers and collaborating with business

partners.

• Create value by forming new relationships

between and among businesses and

processes.

Page 8: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

8

E-Business Goals

• Reach new markets

• Create new products and services

• Build customer loyalty

• Enrich human capital

• Make optimum use of existing and emerging

technologies

• Achieve market leadership and competitive

advantage

Page 9: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• E-commerce is not e-business.

• Why??

9

Page 10: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• E-COMMERCE HAS BROKEN THE

TRADITIIONAL WAY OF DOING BUSINESS:

• 1 . Companies share information with

competitors

• 2 . Suppliers share information with buyers

• 3 . Corporate procurement is no longer

determined solely on price

• 4 . Financial transaction occur with the

involvement of banks.

10

Page 11: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

11

E-Commerce Myths • 1. Setting up a web site is easy

– But ensuring its availability and performance is difficult.

• 2. E-commerce means no more mass marketing

– Businesses still have to advertise their presence on the web.

• 3. E-commerce means a new economy – There is no “New” economy, but there is something new in the real economy.

• 4. E-commerce is revolutionary – Proportionate attention needs to be paid to aspects

related to 24/7 warehousing, delivery, customer support, etc.

Page 12: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

12

E-Commerce Myths (Contd.)

• 5. E-commerce is a commercial fad that crashed in

2000.

• 6. All products can be sold online

– Some can only be advertised.

• 7. Build it and they will come – Web sites have to be

promoted just like any other business.

• 8.The middleman is out

– Online reselling, headhunting, directory services

etc. is the emerging trend in e-commerce.

• 9. Size is not important for online firms

– Cyber customers are known to have preferred e-

commerce with large brand names.

Page 13: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

13

Advantages of E-Commerce

• Lower relative cost

– Proportionate investment allows startup companies to compete with market leaders.

• Economic Operations

– Administration of e-commerce infrastructure can be relatively more economical than that of a off-line business.

• Higher Margin

– For the same scale of business, processing overheads reduce considerably.

Page 14: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

14

Advantages of E-Commerce (Contd.)

• Better customer service

– Responsive and accurate online customer service.

• Convenient market search

– No need to physically move from store to store to

make price and promotions comparisons.

• Productivity gains

– Lesser resource allocation

– Value added resources

• Teamwork

– Higher overall interactivity between consumers and

businesses.

Page 15: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

15

Advantages of E-Commerce (Contd.)

• Knowledge markets

– Convenient research environment

• Information sharing, convenience and control

– 24/7 operations possible with minimum physical interactions.

• Contemporary business models

– Large scale barter trade

– Payments in kind vs. cash

• Product customizations

– Convenient market research allows development of customizable products or products with wider consumer base.

Page 16: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

16

Limitations of E-Commerce

• Security

– Spamming, spying, file corruption, and misuse.

Cyber consumers need secure transaction and site

protection.

• System and data integrity

– Security against viruses, hackers and attackers.

– Major challenges include defense against

disruptions and unauthorized changes in data.

• E-commerce is not free

– Small businesses still have to compete with the

reputation of market leaders.

Page 17: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

17

Limitations of E-Commerce (Contd.)

• Consumer search is neither cost effective nor

efficient

– Consumers may need quality guarantees and

assistance in search, adding to the eventual cost of

the product or service.

• Fulfillment problems

– Business may grow rapidly and the infrastructure

may not be able scale with the growth.

• Customer relations problems

– E-business requires customer loyalty to survive.

Page 18: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

18

Limitations of E-Commerce (Contd.)

• Products people wont buy online

– For some products people like to “road-test” the product before making a purchase.

• Corporate vulnerability

– Corporations do web-farming to extract business intelligence from online marketing information of their competitors.

• Lack of blueprint for handling e-commerce

– Traditional corporate structures and procedures inhibit progress in e-commerce.

– Most corporations have significant shortage of e-literate executives.

Page 19: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

19

Limitations of E-Commerce (Contd.)

• High-risk of Internet Startup

– Most Internet startups fail because of,

• Lack of sound business strategy,

• Disproportionate investment of time and resources,

• Inappropriate merchandise.

Page 20: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

20

Value Chains in E-Commerce • Organization of activities of a business so that

each activity adds value to the total operation of the business.

• Competitive advantage is achieved when an organization links activities in its value chain more cost effectively and efficiently than its competitors.

• Activities should be linked such that value-added (output) of one activity contributes to the input of another activity.

Page 21: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Activities of an organization can be divided into

– Primary activities: Activities that support primary activities and each other by providing purchased inputs, technology, human resources and other firm functions.

– Support activities: Activities involved in the physical creation of a product or service and its sale, transfer to the buyer and after sale assistance.

21

Page 22: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Primary Activities of value chain:

• 1. Inbound logistics: these are procurement

activities – vendor selection, comparative

shopping, negotiating supply contracts and just-

in-time arrival of goods.

• 2. Operations: This is the actual conversion of

raw materials received into finished products. In

includes machining, packaging, assembly,

equipment maintenance, testing, printing and

facility operations.

22

Page 23: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• 3. Outbound logistics: This activity represents

the actual storing, distributing and shipping of

the final product.

• 4. Marketing and sales: It deals with the

ultimate customer. It includes advertising,

product promotion, sales management,

identifying the product’s customer base, and

distribution channels.

• 5. Service: it focuses on after-sales service to

the customer. It includes testing, maintenance,

repairs, warranty work, and replacement parts. 23

Page 24: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Support Activities of value chain:

• 1. Corporate infrastructure: This activity is the

backbone of the business unit. It includes

general management, accounting, finance,

planning, legal services, and quality

management.

• 2. Human resources: This is the unique activity

of matching the right people to the job. It

involves recruitment, relation, career path

development, compensation, training and

development. 24

Page 25: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Technology development: This activity adds

value in the way it improves the product and the

business process in the primary activities.

• Procurement: This activity focuses on the

purchasing function and how well it ensures the

availability of quality raw material for

production.

25

Page 26: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Figure: A generic e-commerce model

26

Page 27: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

27

E-Commerce Integration

• Trend in e-commerce: Integration of the entire lifecycle – From the time the consumer purchases on the website

to the time the product is actually received.

Therefore, it is a path of various links (departments) in the chain to work together for a common objective – profitability and customer satisfaction.

Page 28: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• The lifecycle focuses around three major e-commerce applications,

– Business to consumer (B2C) • Performed on the Internet

– Business to business (B2B) • Performed on the Internet and Extranet

– Business within business • Performed on the Intranet.

28

Page 29: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Figure: Key elements of Internet, extranet and

intranet e-commerce 29

Page 30: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Different types of e-commerce

• Business-to-business (B2B)

• Business-to-Consumer (B2C)

• Business-to-government (B2G)

• Consumer-to-consumer (C2C)

• Government to consumer (G2C)

• Government-to-business (G2B)

30

http://www.slideshare.net/siddhesh130995/e-commerce-

31086645?next_slideshow=1

Page 31: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

What is B2B e-commerce? • B2B e-commerce is simply defined as e-commerce

between companies. About 80% of e-commerce is of

this type.

• Examples: Intel selling microprocessor to Dell

• Heinz selling ketchup to Mc-Donalds

31

Page 32: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

What is B2C e-commerce? • Business-to-consumer e-commerce, or commerce

between companies and consumers, involves customers

gathering information; purchasing physical goods or

receiving products over an electronic network.

• Example: Dell selling me a laptop

32

Page 33: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

What is B2G ecommerce? • Business-to-government e-commerce or B2G is

generally defined as commerce between companies and

the public sector. It refers to the use of the Internet for

public procurement, licensing procedures, and other

government related operations

• Example: Business pay taxes, file reports, or sell goods

and services to Govt. agencies.

33

Page 34: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

What is C2C ecommerce?

• Consumer-to-consumer e-commerce or C2C is simply

commerce between private individuals or consumers.

• Example: Mary buying an iPod from Tom on eBay

I selling a car to my neighbor.

34

Page 35: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

G2C E-commerce • This Model is also a part of e-governance.

• The objective of this model is to provide good and

effective services to each citizen. The Government

provides the following facilities to the citizens through

website.

• Information of all government departments, Different

welfare schemes, Different application forms to be used by

the citizens.

35

Page 36: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

G2B E-commerce

• Government-to-business (G2B) is a business model

that refers to government providing services or

information to business organization.

• Government uses B2G model website to approach

business organizations. Such websites support

auctions, tenders and application submission

functionalities.

36

Page 37: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

37

Supply Chain Management

• Integrating the networking and communication infrastructure between businesses and suppliers to ensure

– having the right product,

– in the right place,

– at the right time,

– at the right price,

– in the right condition.

• An integral part of the B2B framework.

• Transforms the way companies deal with suppliers, partners and customers to improve efficiency and profitability.

Page 38: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Beginnings of the Internet

• The internet is the infrastructure that links

thousands of networks together.

• No one knows exactly how many computers are

connected to the Internet.

• It is a information super highway that makes the

information stored on thousands of computers

worldwide for people everywhere.

• Transmit messages among servers using

satellites, fiber-optic, cables, microwaves and

other technologies.

38

Page 39: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

39

Internet

INTERNET

Page 40: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

40

Information Transfer on the Internet

• Information to be transmitted over the Internet is segmented into packet.

• Each packet is transmitted independently of the others even if they belong to the same message.

• Packetisation of information to be communicated provided efficiency and flexibility.

• Packets were communicated from the source to the destination using a protocol.

• A protocol is a set of rules used by computers in communicating messages across a network

Page 41: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Making of WWW

• The WWW is a virtual space where the

information transmits electronically across the

world through the computer network using the

hypertext.

• Hypertext: it is the text that contains keywords

to connect to other documents.

• Such keywords, called links, are selected by the

designer of the Web site.

• Hypertext for the Web can be generated with a

language called HyperText Markup Language.

41

Page 42: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

42

World Wide Web

• Technically, it is a cluster of software, protocols, and standards.

• It is an organization of files designed around a group of Internet servers programmed to handle requests from browser software on user terminals.

• Now web documents can link to other media on the Internet, such as images, video, audio and animated graphics.

– Browsers can invoke handler software for each different type of media.

Page 43: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

43

Hierarchical Structure of Internet

User User User User User User User User

Local Nets Local Nets

Regional ISPs Regional ISPs Regional ISPs

Regional Nets Regional Nets Regional Nets

Network Access Point NAP NAP

High Speed Backbone Networks

Page 44: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Web Search Elements

• Browser

• A browser is a piece of software that allows to

navigate the Web. Example: Chrome, Internet

Explorer, Netscape, Opera etc.

• Technically, a browser is a Web client program

that uses Hypertext Transfer Protocol (HTTP) to

make requests to Web server throughout the

Internet on behalf of the browser user.

• There are two types of browsers:

• 1. Text-only mode such as Lynx.

• 2. Graphic mode. 44

Page 45: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

45

Search Engine

• Search engines

– A web site or a database with tools to generate that

database and search its contents. Example:

Google.com, Yahoo.com

There are other definitions:

– A software program that collects and indexed

Internet resources and provides a keyword.

– A Web-based system for searching the information

available on the Web.

– An automated system that relies on a software

agent

Page 46: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Two other components of a Web search

engine.

• Web robots

– Collection parts of search engines that roam web

sites, retrieve messages and sort, index and then

download them one by one.

• Spiders

– A software tool that prowls the Web looking for new

sites where specific information is likely to reside.

46

Page 47: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

47

Internet Service Providers (ISPs) • Companies that link users to the Internet.

• ISP offers a variety of services:

1. Linking consumers and businesses to the Internet.

2. Monitoring and maintaining customer web sites.

3. Providing network management and system integration

4. Providing backbone access services for other ISPs

5. Offering payment systems for online purchases

Page 48: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

48

Web Fundamental • HTTP

– Hyper-Text Transfer Protocol

– Allows transfer of requests for web pages from

clients and the retrieved web pages from servers to

clients for display.

• URL

– Uniform Resource Locator

– A name that represents the address of a specific

web site.

– URL is divided into two parts

• Protocol, e.g., http, ftp, file.

• Resource, i.e., name of server and the file on the server.

Page 49: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

49

Web Security Protocols

• There are two main security protocols.

• Secure Sockets Layer (SSL)

– A protocol for transmitting information in a secure

manner over the Internet.

• S-HTTP

– Secure HTTP

– An extension of HTTP that provides various security

features such as client server authentication.

– Also allows web clients and servers to specify

privacy capabilities.

Page 50: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Definition of Network

• What is a network?

• A network is a connection between at least two

computers for the purpose of sharing

resources.

• All networks are based on the concept of

sharing.

• Types of networks:

• Two types of networks:

• 1. Peer-to-peer network

• 2. Client/server network

50

Page 51: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Peer-to-peer network

• Computers in peer-to-peer networks are linked

together as equals, with no centralized server

or control.

• Any computer can share its resources with any

other computer on the same network in any

way and whenever it chooses to do so.

• A peer-to-peer setup connects fewer than 10

computers.

• Increasing number – becomes impractical –

worse the performance.

51

Page 52: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Figure 3.2

52

Page 53: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Table 3.1

53

Page 54: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Client/server networks

• A server is simply a special-purpose computer

and software designed for one function – to

address a client’s request.

• A client is any computer or workstation

connected to the server within a network.

• Main advantage of client/server network is

centralized control over network resource.

• All programs or applications reside on the

server.

• - is a multiuser environment. 54

Page 55: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Figure 3.3

55

Page 56: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Table 3.2

56

Page 57: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Packets and Protocols

• Packets: a sequence of bits that carries

identifying information for transmitting the data

as well as the data itself.

• A single packet contains a header to keep track

of the actual data it carries.

• Size 100 – 2000 bytes.

57

Page 58: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

• Protocols: Protocols are pieces of software that

run on every node or computer and allow every

pair of computers to communicate directly.

• A rule that governs how communication should

be conducted between two parties, two

computers or a source and a destination.

58

Page 59: ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabirdept.ru.ac.bd/ice/faculty/download_cv/EC-Lectures.pdf · ICE-M1151: E-Commerce System Dr. Md. Hasnat Kabir References ... • Heinz

Design considerations

• Consider several factors:

• Location – where will the network be installed?

• Capacity – What is the optimum traffic capacity of

the network?

• Distance limitation – What is the distance of the

farthest PC to the server?

• Cost – What is the estimated cost of the proposed

network installation?

• Potential growth - How easily and how well can

the network be expanded?

• Security – How secure is the proposed network? 59