1st Lecture- Web Engineering basics.pptx

web engineering

1. Web Engineering 1 st Lecture

2. INTERNET The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite ( TCP/IP ) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies.

3. INTERNET The Internet, sometimes called simply "the Net," is a worldwide system of computer networks - a network of networks in which users at any one computer can, if they have permission, get information from any other computer (and sometimes talk directly to users at other computers). It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPANet . The original aim was to create a network that would allow users of a research computer at one university to be able to "talk to" research computers at other universities . A side benefit of ARPANet's design was that, because messages could be routed or rerouted in more than one direction, the network could continue to function even if parts of it were destroyed in the event of a military attack or other disaster.

4. INTERNET Today, the Internet is a public, cooperative, and self-sustaining facility accessible to hundreds of millions of people worldwide. Physically, the Internet uses a portion of the total resources of the currently existing public telecommunication networks. Technically, what distinguishes the Internet is its use of a set of protocols called TCP/IP (for Transmission Control Protocol/Internet Protocol).

5. INTERNET

6. Internet service provider(ISP) An Internet service provider ( ISP ) is an organization that provides access to the Internet. Access ISP s directly connect clients to the Internet using copper wires, wireless or fiber-optic connections

7. Web server Web server can refer to either the hardware (the computer) or the software (the computer application) that helps to deliver Web content that can be accessed through the Internet. The most common use of web servers is to host websites, but there are other uses such as gaming, data storage or running enterprise applications

8. Web server The primary function of a web server is to deliver web pages on the request to clients using the Hypertext Transfer Protocol (HTTP). This means delivery of HTML documents and any additional content that may be included by a document, such as images, style sheets and scripts.

9. CLIENT A client is a piece of computer hardware or software that accesses a service made available by a server. The server is often (but not always) on another computer system, in which case the client accesses the service by way of a network.

10. CLIENT A client is a computer program that, as part of its operation, relies on sending a request to another computer program (which may or may not be located on another computer). The term "client", however, may also be applied to computers or devices that run the client software or users that use the client software . For example, web browsers are clients that connect to web servers and retrieve web pages for display. Email clients retrieve email from mail servers. Online chat uses a variety of clients, which vary depending on the chat protocol being used. Multiplayer video games or online video games may run as a client on each computer.

11. CLIENT SERVER

12. B2B APPLICATION Web definitions define the acronym B2B as the legal term "business to business" and add that "B2B applications are used by those companies that are in the business of marketing and selling goods and services exclusively to other businesses instead of to the consuming public”. In other words, the term is used exclusively in connection with ecommerce and advertising where one business targets another business, instead of targeting consumers. Enabling business applications to communicate across corporate boundaries can be complicated.

13. Business-to-business (B2B) Business-to-business ( B2B ) describes commerce transactions between businesses, such as between a manufacturer and a wholesaler, or between a wholesaler and a retailer. Contrasting terms are business-to-consumer (B2C) and business-to-government (B2G). B2B (Business to Business) Branding is a term used in marketing.

14. Business-to-business (B2B)

15. Business-To-Consumer (B2C) is the sale of goods and services from individuals or businesses to the end-user. Retailers are part of an integrated system called the supply chain. A retailer purchases goods or products in large quantities from manufacturers directly or through a wholesale, and then sells smaller quantities to the consumer for a profit. Online retailing, a type of electronic commerce used for business-to-consumer (B2C) transactions and mail order, are forms of non-shop retailing.

16. B2B vs. B2C The terms B2B and B2C are short forms for Business-to-Business (B2B) and Business-to-Consumer (B2C). Both describe the nature and selling process of goods and services. While B2B products and services are sold from one company to another, B2C products are sold from a company to the end user. While almost any B2C product or service could also be a B2B product, very few B2B products or services will be used by consumers.

17. Customer to Customer (C2C) Consumer-to-consumer (C2C) (or citizen-to-citizen ) electronic commerce involves the electronically facilitated transactions between consumers through some third party. A common example is the online auction(sale), in which a consumer posts an item for sale and other consumers bid to purchase it; the third party generally charges a flat fee or commission. The sites are only intermediaries, just there to match consumers. They do not have to check quality of the products being offered.