IRIS EDUCATION

Types of Network Protocol Network protocols are formal rules, procedures and formats that define communication between two or more devices over a network. Network protocols govern the end to end process of network communication. There are wide ranges of protocol used in network communication some are given below: File Transfer Protocol (FTP) – The File Transfer Protocol or FTP is a protocol used for transferring files from one computer to another computer. FTP is the preferred method of exchanging files because it is faster than other protocols like HTTP (Hyper Text Transfer Protocol) or POP (Post Office Protocol). Simple Mail Transfer Protocol (SMTP) – This protocol is used for sending e-mail messages between servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another. The messages can then be retrieved with an e-mail client using either POP or IMAP . POP is the short form of Post Office Protocol, a protocol used t...

REM Program to add two numbers PRINT "Enter any number : " INPUT a PRINT "Again enter any number : " INPUT b LET c = a+b PRINT "Addition of two numbers are : ";c END

Difference between Internet and Intranet? Internet refers to a global network that connects a large number of computers, by using routers. All computers on the internet communicate with one another using the Transmission Control Protocol/Internet Protocol (TCP/IP). Intranet is similar to internet but they differ in size and ownership. Intranet is also a computer network (especially LAN) which is privately owned by a particular individual or an organization. Intranet uses TCP/IP for sending and receiving information but it is accessible to organization members only.

What is Internet? Internet refers to a global network that connects a large number of computers, by using routers. All computers on the internet communicate with one another using the Transmission Control Protocol/Internet Protocol (TCP/IP). Evolution of Internet The foundation of the internet was given in the year 1969 when the US Department of Defence sponsored a project to connect itself with the different universities to share information with their colleagues in other U.S. cities. The project was named ARPANET (Advanced Research Projects Network) .The main motive behind this project was to develop a secure network that survives and works even after nuclear attack. By 1971 there were 30 universities participating in ARPANET. Computers in ARPANET use certain rules to communicate with each other. These set of rules are termed as Protocols. The protocol used by ARPANET was NCP (National Control Protocol). By the time NCP was out of use and TCP/IP came into the world of net...

What is computer network? A computer network is composed of multiple computers connected together for the purpose of communication, sharing data and resources, etc. The computers in a network may be linked through cables, telephone lines, radio waves or infrared light beams. Advantages of computer network: Communication - People use networks to communicate with each other by exchanging messages and information. We can take the example of a whatsapp group, video conferencing software like imo, skype, google duo, etc. In this type of software each all of us are connected with each other sharing our ideas, thoughts, discussing some topics, etc. Sharing of hardware resources - Networking of computers enables users to share hardware resources like scanners, printers, etc. Eg. Suppose there are two computer systems in your house if you want to give print then you need a printer. So what would you do, you will buy two printers for the two computer, no you will not do this because...

Object Oriented Programming (OOP) refers to a programming methodology based on objects, instead of just functions. These objects are created by classes for data controlling and access to code. Most programming language supports OOP like Java, C++, PHP, etc.

Record sets are the basic foundation of database programming. Normally all business application need to store large volume of data, organised in a format that simplify retrieval of data, this is accomplished with a Database Management System (DBMS). It is a mechanism for manipulating tabular database with high level commands. The database management system hides low level details such as how data are stored in a database and free's the programmer to concentrate on managing information, rather than on the specific of manipulating files or maintaining link among them.

Types of DBMS According to the structure the DBMS is divided into four categories: 1. Hierarchical Database 2. Network Database 3. Relational Database 4. Object-oriented Database 1. Hierarchical Database – In hierarchical database, records contain information about their groups of parent or child relationship just like as a tree. The structure implies that a record can have repeating information. 2. Network Database – A network databases are mainly used on large digital computers. A network database model is a database model that allows multiple records to be linked to the same owner file. The network database follows many to many relationship model, and because of many to many relationship model network database model can easily access any table record in the database. It is easier to navigate and search for information because of flexibility. It is suitable in complex data because of the multiple relationship founded among its data. 3. Relational Databas...

DBMS A DBMS (Database Management System) is a collection of programs that enables you to store, modify and extract information from a database. In simple words we can say that the DBMS is a type of system which manages the data in database like to add new data, modify the data and delete the existing data. DBMS can be used in many places like Banking to manage the records of the account and transaction, Schools to manage the record of the student and their fees, Payroll Management System to manage the details related to the employees like, attendance, salary, etc, and there are many more field we can use the facility DBMS.  Advantages of DBMS 1. Stop data redundancy and inconsistency – Data redundancy is a situation created within a database in which the same piece of data is present at two separate places. Here are two tables in a database in which a common field is present in the table i.e. “ Student_Name ”, so if you use this type of database structure then t...

What is Data? Data is a collection of facts or information which we input into the computer. Like name, age, gender, images, videos, etc. All these data's are stored in unorganized way in computer, but in database we can store all these data in an organised manner. What is Database? Database is a collection of information that is organised so that it can be easily accessed, managed and updated. Formally the database refers to the set of related data organized in a manner. Access to these data is usually provided by a system called Database Management System(DBMS).