WEB SERVICES
INFORMATION RETRIEVAL
It is the process of accessing information that is stored on the Internet. The process of exploring and retrieving the information from the Internet is known as net surfing. When your PC is connected to the Internet, you are ready to retrieve information from it. You need a particular software called Web browser to retrieve information.
When you type the URL of a particular Website in the address bar of the Web browser and press Enter key, the browser retrieves the Web page from the Internet and stores its content.
It is the process of accessing information that is stored on the Internet. The process of exploring and retrieving the information from the Internet is known as net surfing. When your PC is connected to the Internet, you are ready to retrieve information from it. You need a particular software called Web browser to retrieve information.
When you type the URL of a particular Website in the address bar of the Web browser and press Enter key, the browser retrieves the Web page from the Internet and stores its content.
SEARCH ENGINE
It is a Website that provides the required data on specific topics. It turn the Web into a powerful tool for finding information on any topic. Search engine allows users to enter keywords (queries or terms) related to particular topics and retrieve information about the Websites containing these keywords. It is a program designed to search for information on the Web through a database of Web pages queries or keywords.
When search query is submitted in the search engine by user, the software used for search algorithm scans the index to find Web pages over the Internet.
Some of the most popular search engines are as follows:
Google
http://www.google.com
AltaVista
http://www.altavista.com
It is a Website that provides the required data on specific topics. It turn the Web into a powerful tool for finding information on any topic. Search engine allows users to enter keywords (queries or terms) related to particular topics and retrieve information about the Websites containing these keywords. It is a program designed to search for information on the Web through a database of Web pages queries or keywords.
When search query is submitted in the search engine by user, the software used for search algorithm scans the index to find Web pages over the Internet.
Some of the most popular search engines are as follows:
http://www.google.com
AltaVista
http://www.altavista.com
Yahoo
http://www.yahoo.com
Hotbot
http://www.hotbot.com
Lycos
http://www.lycos.com
Excite
http://www.excite.com
Web Crawler
http://www.webcrawler.com
http://www.yahoo.com
Hotbot
http://www.hotbot.com
Lycos
http://www.lycos.com
Excite
http://www.excite.com
Web Crawler
http://www.webcrawler.com
FILE TRANSFER PROTOCOL (FTP)
It is a set of rules that enable a user to transfer files between those computers that have Internet connection. It is a protocol through which Internet users can upload files from their computer to a Website or download files from a Website to their PC.
FTP is the easiest way to transfer files between computers via Internet and utilities TCP (Transmission Control Protocol)/IP (Internet Protocol) systems to perform uploading and downloading tasks.
Objectives of FTP are as follows:
· To promote sharing of files (computer programs and/or data).
· To encourage indirect or implicit (via programs) use of remote computers.
· To shield a user from variations in file storage systems among hosts.
· To transfer data reliably and efficiently.
Some freely available FTP softwares are FileZilla, Kasablanca, gFTP, konqueror etc.
DOWNLOADING AND UPLOADING FILES FROM/TO REMOTE SITES Downloading is the transmission of a file from server or remote computer system to user’s computer. From the Internet-user’s point-of-view, downloading a file means request for a file from server computer and to receive it. Downloading images, articles and applications from the Internet has become a snap with text (like Download, Click Here etc.) links on Web pages.
Uploading is the transmission of a file from local system to a server or remote computer. From an Internet-user’s point-of-view, uploading is sending a file to a computer that is set-up to receive it. The most common type of uploading is when a user uploads a digital image to an Internet site.
The uploaded files are stored on the Website’s servers and can be seen by anyone who has the Internet connection and it is necessary to use the right software for viewing it.
It is a set of rules that enable a user to transfer files between those computers that have Internet connection. It is a protocol through which Internet users can upload files from their computer to a Website or download files from a Website to their PC.
FTP is the easiest way to transfer files between computers via Internet and utilities TCP (Transmission Control Protocol)/IP (Internet Protocol) systems to perform uploading and downloading tasks.
Objectives of FTP are as follows:
· To promote sharing of files (computer programs and/or data).
· To encourage indirect or implicit (via programs) use of remote computers.
· To shield a user from variations in file storage systems among hosts.
· To transfer data reliably and efficiently.
Some freely available FTP softwares are FileZilla, Kasablanca, gFTP, konqueror etc.
DOWNLOADING AND UPLOADING FILES FROM/TO REMOTE SITES Downloading is the transmission of a file from server or remote computer system to user’s computer. From the Internet-user’s point-of-view, downloading a file means request for a file from server computer and to receive it. Downloading images, articles and applications from the Internet has become a snap with text (like Download, Click Here etc.) links on Web pages.
Uploading is the transmission of a file from local system to a server or remote computer. From an Internet-user’s point-of-view, uploading is sending a file to a computer that is set-up to receive it. The most common type of uploading is when a user uploads a digital image to an Internet site.
The uploaded files are stored on the Website’s servers and can be seen by anyone who has the Internet connection and it is necessary to use the right software for viewing it.
CHAT It is the online textual or multimedia conversation. It is a real-time communication between two users via computer. It is widely interactive text-based communication process that takes place over the Internet.
Chatting is a virtual means of communication that involves the sending and receiving of messages, share audios and videos between users located in any part of the world.
In chatting, you type a message in your chat box, which is immediately received by the recipient, then the recipient types a message in response to your message, which is instantly received by you.
A chat room is the hub of Internet chatting. Chat rooms (virtual room) are actually chat servers that allow several users to login to them simultaneously. After joining a room, you can read the messages of other users and send your own messages to them or to anyone else.
Chatting is a virtual means of communication that involves the sending and receiving of messages, share audios and videos between users located in any part of the world.
In chatting, you type a message in your chat box, which is immediately received by the recipient, then the recipient types a message in response to your message, which is instantly received by you.
A chat room is the hub of Internet chatting. Chat rooms (virtual room) are actually chat servers that allow several users to login to them simultaneously. After joining a room, you can read the messages of other users and send your own messages to them or to anyone else.
Advantages of Chat
1. Photos can be sent using an instant messaging.
2. Emotions can be expressed easily when communicating with a person.
3. It is almost same as talking to someone face-to-face.
4. You can also chat in a group.
5. It makes it possible for user to keep in contact and chat to each other even if, they are in different countries without having to pay a lot of money.
1. Photos can be sent using an instant messaging.
2. Emotions can be expressed easily when communicating with a person.
3. It is almost same as talking to someone face-to-face.
4. You can also chat in a group.
5. It makes it possible for user to keep in contact and chat to each other even if, they are in different countries without having to pay a lot of money.
Disadvantages of Chat
1. Viruses can be easily spread via texting.
2. Children tend to spend more time in chatting with friends instead of bonding with their family and studies.
1. Viruses can be easily spread via texting.
2. Children tend to spend more time in chatting with friends instead of bonding with their family and studies.
E-GROUPS (ELECTRONIC GROUPS)
An E-group or online clubbing is a group of persons or individuals who come together over the Internet for a specific or common purpose using the best Internet communication tools to share ideas, different opinions, experiences and to learn from each other. E-groups are Internet based discussion groups. A message posted in discussion is known as post. All the posts are visible to all the group members.
An E-group or online clubbing is a group of persons or individuals who come together over the Internet for a specific or common purpose using the best Internet communication tools to share ideas, different opinions, experiences and to learn from each other. E-groups are Internet based discussion groups. A message posted in discussion is known as post. All the posts are visible to all the group members.
Advantages of an E-Groups
1. It helps to create and maintain social relationship.
2. It facilitates communication among members.
3. It facilitates research as members assist one another.
4. It facilitates learning.
5. Less time and cost is used.
6. It keeps members abreast with new development and knowledge.
1. It helps to create and maintain social relationship.
2. It facilitates communication among members.
3. It facilitates research as members assist one another.
4. It facilitates learning.
5. Less time and cost is used.
6. It keeps members abreast with new development and knowledge.
Disadvantages of an E-Groups
1. There is no privacy, if intimate issues are discussed.
2. Every wrong information has a negative impact on each other.
3. It is hard to follow the logical sequence of discussion.
1. There is no privacy, if intimate issues are discussed.
2. Every wrong information has a negative impact on each other.
3. It is hard to follow the logical sequence of discussion.
VIDEO CONFERENCING
It is a communication technology that integrates videos and audios to connect users anywhere in the world, as if they are in the same room. This term usually refers two way communication between two or more users who are in at least two different locations, rather than one-to-one communication and it often includes multiple people at each location.
Each user or group of users who are participating in a video conference typically must have a computer, a camera, a microphone, a video screen and a sound system.
Basically, this is a system that allows you to conduct meetings or trainings in different places simultaneously. So, this technology is most popular in the field of business because it allows meetings or conferences to be held without the need for all the participants to travel to a single location and thus, it saves time and money.
Senders and receivers must be online at the same time.
It is a communication technology that integrates videos and audios to connect users anywhere in the world, as if they are in the same room. This term usually refers two way communication between two or more users who are in at least two different locations, rather than one-to-one communication and it often includes multiple people at each location.
Each user or group of users who are participating in a video conference typically must have a computer, a camera, a microphone, a video screen and a sound system.
Basically, this is a system that allows you to conduct meetings or trainings in different places simultaneously. So, this technology is most popular in the field of business because it allows meetings or conferences to be held without the need for all the participants to travel to a single location and thus, it saves time and money.
Senders and receivers must be online at the same time.
Advantages of Video Conferencing
1. It reduces your travel costs by working remotely and also increases productivity through collaborative working.
2. Many people can share their videos with each other at the same time.
3. PowerPoint and other visual displays can be shared with everyone attending the conference at the same time.
4. Virtual whiteboard allows people from different locations to add their own thoughts or ideas into one collaborative space.
5. With more advanced services, a document can be changed and typed directly from other computers connected to the conference.
1. It reduces your travel costs by working remotely and also increases productivity through collaborative working.
2. Many people can share their videos with each other at the same time.
3. PowerPoint and other visual displays can be shared with everyone attending the conference at the same time.
4. Virtual whiteboard allows people from different locations to add their own thoughts or ideas into one collaborative space.
5. With more advanced services, a document can be changed and typed directly from other computers connected to the conference.
Disadvantages of Video Conferencing
1. In the middle of an important meeting, you may be disconnected at any time and have to wait to be reconnected.
2. There is no substitute for a face-to-face meeting in getting to know someone.
1. In the middle of an important meeting, you may be disconnected at any time and have to wait to be reconnected.
2. There is no substitute for a face-to-face meeting in getting to know someone.
SOCIAL NETWORKING
This service is an online service, platform or site that focuses on facilitating the building of social networks or social relations among people. Ex- who share interests, activities, backgrounds or real life connections. When it comes to online networking, social networking Websites are commonly used. These Websites are known as social networking sites.
Finding People on the Net
There are numerous sites on an Internet and search engines that can be used to help for finding people on Internet.
· Search on social networking sites such as Facebook, Myspace, Black Planet etc. for the person.
· Perform an online search for the person by name.
Sites such as Bing, Yahoo search etc.
This service is an online service, platform or site that focuses on facilitating the building of social networks or social relations among people. Ex- who share interests, activities, backgrounds or real life connections. When it comes to online networking, social networking Websites are commonly used. These Websites are known as social networking sites.
Finding People on the Net
There are numerous sites on an Internet and search engines that can be used to help for finding people on Internet.
· Search on social networking sites such as Facebook, Myspace, Black Planet etc. for the person.
· Perform an online search for the person by name.
Sites such as Bing, Yahoo search etc.
Advantages of Social Networking
1. Social networking sites help us to find our long-lost and childhood friends and relatives.
2. No software or setting changes necessary to PC/phone.
3. It is an easy and cost effective way to reach your consumers and people in your network.
4. For business purposes, connecting with your customers on a personal and professional level will make them loyal to your company and brand.
5. It helps in building credibility amongst the customers.
1. Social networking sites help us to find our long-lost and childhood friends and relatives.
2. No software or setting changes necessary to PC/phone.
3. It is an easy and cost effective way to reach your consumers and people in your network.
4. For business purposes, connecting with your customers on a personal and professional level will make them loyal to your company and brand.
5. It helps in building credibility amongst the customers.
Disadvantages of Social Networking
1. Lack of anonymity.
2. Social networking usually requires you to input your name, location, age, gender and many other types of personal information.
3. Scams and harassment.
4. Being online you are at risk of facing cases of cyber stalking and theft identity.
5. Time consuming.
6. If you are new to social networking, learning process can be time consuming.
1. Lack of anonymity.
2. Social networking usually requires you to input your name, location, age, gender and many other types of personal information.
3. Scams and harassment.
4. Being online you are at risk of facing cases of cyber stalking and theft identity.
5. Time consuming.
6. If you are new to social networking, learning process can be time consuming.
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