Examples of Database Applications
The following are examples of database applications:
computerized library systems;
automated teller machines;
flight reservation systems;
computerized parts inventory systems.
9. Сұрақ: Give definition to Computer networks
Жауап: A computer network is a collection of computers and devices connected via communication devices and transmission media. Computer network is a telecommunication channel through which we can share our data. It is also called data network. The best example of computer network is Internet.
The main purpose of the network - a convenient and fast data exchange (of information) between devices.
Network components:
- End Devices - End Device
- Network Media (medium) - Network environment.
The network devices that people are most familiar with are called end devices. These devices form the interface between the human network and the underlying communication network
Types of network:
Local-area network (LAN)A network that connects a relatively small number of machines in a relatively close geographical area
Wide-area network (WAN) A network that connects two or more local-area networks over a potentially large geographic distance
Metropolitan-area network (MAN) The communication infrastructures that have been developed in and around large cities
Types of Networks
Various configurations, called topologies, have been used to administer LANs
Ring topology A configuration that connects all nodes in a closed loop on which messages travel in one direction
Star topology A configuration that centers around one node to which all others are connected and through which all messages are sent
Bus topology All nodes are connected to a single communication line that carries messages in both directions
10. Сұрақ: Describe Browsers and search engines, domains
Жауап: When we go to the website, we (or rather, our browser) first sends a request to a web server where you store the files of the requested site, and have a special service (program the HTTP server) processes the request and sends us back the web page file which (web page) and we will see in the browser.
Services: Web server, mail-server, ftp-server.
Alternatively referred to as a web browser, a browser is a software program which helps users to view internet sites and explore content on the WorldWideWeb. These pieces of content, including pictures, videos, and webpages, are connected using hyperlinks.
Therehavebeenmanydifferentwebbrowsersthathavecomeandgoneovertheyears. Popular web browsers are Internet Explore, Google Chrome, Mozila Firefox, Opera, Yandex and etc.
A search engine is a software program available through the Internet that searches documents and files for key words and returns the results of any files containing those key words. Today, there are thousands of different search engines available on the Internet, each with their own abilities and features. Today, the most popular and well-known search engines are Google, Yandex, Youtube, Rambler, Wikipedia and etc.
For users, a search engine is accessed through a browser on their computer, smartphone, tablet, or another device.
A domain name is a unique name that identifies a website. For example, the domain name of our University is "ayu.edu.kz" Each website has a domain name that serves as an address, which is used to access the website.
The domain code identifies the type of organization. For example:
.com commercial organization
.edu educational institution
.kz Kazakhstan, .ru Russia, .uk-United kingdom, .uz-Uzbekistan, .tr-Turkey
.org Organisation
.gov government of a nation
A domain name canbe a maximum of sixty-three characters with one character minimum, and is entered after the protocol in the URL, as you can see in the following example.
