NIELIT Assignment 1: Basics of Os, Unix and Shell Programming

Assignment 1.

Try the following command sequence and write its output:
cd ; pwd ;ls -al ; cd . ;pwd (where did that get you?) ; cd .. ;pwd ; ls -al ; cd .. ; pwd;ls -al ;cd

UGC Net Computer Science Paper 3 July-16 Page 5

41. Which of the following statements is not correct ?
(1) HTML is not screen precise formatting language.
(2) HTML does not specify a logic.
(3) DHTML is used for developing highly interactive web pages.
(4) HTML is a programming language.

Answer D
Expiation : No, HTML is not a programming language. The "M" stands for "Markup". Generally, a programming language allows you to describe some sort of process of doing something, whereas HTML is a way of adding context and structure to text.

42. When one object reference variable is assigned to another object reference variable then
(1) a copy of the object is created.
(2) a copy of the reference is created.
(3) a copy of the reference is not created.
(4) it is illegal to assign one object reference variable to another object reference
variable.

Answer : B
Explanation : A reference variable in C++ is an alternate name/alias of a variable/object, which must be initialized at the declaration time. One a reference variable has been assign an object address then it became an alias of that object so any change from reference variable will affect original object data. So we can say that a reference variable is a copy of refer variable/object.

class test

{

     int i;

     public:

     test()

     {

          i=0;

     }

     void change()

     {

          i++;

     }

     void print()

     {

          cout<<endl<<i;

     }

};

void main()

{

     test ob1;

     test &ob2=ob1;
     ob1.change();

     ob2.print();

     ob1.change();

     ob2.print();

}

Introduction of Variable in C Language

Variable in any programming language when we start programming then first thing which we start with is variable. This chapter will give full knowledge of variable’s operation .So let’s start learning process with constant.

Constant

A constant is a value that newer get change. Like value of g (gravitational force) is 9.8, value of PI is 3.14 or your date of birth. Examples of different type of constant are follows

Integer

Integer is numbers that exclude decimal part. For Example if I ask to you that how many siblings you have. Your reply will always be in integer without decimal part.

123,123.45,5

Inquiry Report

Rule

• Positive response less than negative
• Negative less than positive

C Language Data Type

A block diagram can represent a system working model .Here I am going to show you block diagram of computer which is also  follows by many types of machines.

Features of C Language

Modular

C language is also known as building block of function because everything you have do in C with the help of functions. That is why C language uses modular approach to solve huge problem through small modular approach. Modules make our work easy to solve any type of programming problem in a simple way. example of modules are function. A function is a collection of statements which design for some specific task.

Recursion

When a function called by itself known as recursion. Recursion helps to solve a complicated task in a few line of code which decrease compile time and increases software performance.

A8-R4 : BASICS OF OS, UNIX AND SHELL PROGRAMMING Syllabus

Objective of the Course

The objective of the course is to make students aware of the functioning of a multi-user operating

system. This course will serve as a foundation course for the higher level course in Unix. The
students are expected to learn the commands while doing practical and emphasis should be
given to those switches/options and flags, which are most frequently used in real life.

After completion of the course students will be able to:

   • Understand Operating System concepts.
   • Use System calls and memory management.
   • Use Unix commands and editors.
   • Carry out Unix File management and shell programming in Unix.
   • Do Network configuration and security management in Unix.

Save Image In Access and Retrieve in Datagridview Using VB.net

This small project will help you to understand how can you handle image processing in your VB.net Window Application. There are many times when we want to save images in our project software for instance  in school software Saving student image. So you can achieved this through following approach

1. Saving Image into database
2. Saving image into a folder

First approach is not so much popular because image get more size than normal data  So your database saved thousands of byte for an image which lead decline in record retrieval. if you want to follow this approach click on Following Link

Save Image into MS Access  database

This post deal with second approach because its good practice to save information into database and image in a folder . you can save image name into database or rename uploaded image as your table  ID (PK) field value. I am saving image name into database which is easy to implement but renaming image is more suitable because its decrease  database storage.

Screen Shot

Image Add Screen

Dennis Ritchie Computer Scientist

Dennis was an American computer scientist. He created the C programming language and, his colleague Ken Thompson, the Unix operating system. Ritchie and Thompson received the Turing Award from the ACM in 1983, the Hamming Medal from the IEEE in 1990 and the National Medal of Technology from President Clinton in 1999. Ritchie was the head of Lucent Technologies System

Martin Richards (computer scientist)

Martin Richards (born 21 July 1940) is a British computer scientist known for his development of the BCPL programming language which is both part of early research into portable software, and the ancestor of the B programming language invented by Ken Thompson in early versions of Unix and which Dennis Ritchie in turn used as the basis of his widely used C programming language.

History of C Language

Timescale of C language History

1966

BCPL (Basic Combined Programming Language) is a procedural, imperative, and structured computer programming language designed by MartinRichards of the University of Cambridge in 1966.This language for invented to design compiler for other languages. Later on BCPL became B Language. Some people say BCPL means before C language.

C Language Introdunction

C language is general purpose computer programming language. It is in category of high level language with low level facility which enables you to direct access of your computer hardware. C language is also known as building block of function because all the programming task is implemented through function whether it is user defined or built in any library function. Mainly C language is used for system programming from the time of it had been invented.

C Language Introdunction

C language is general purpose computer programming language. It is in category of high level language with low level facility which enables you to direct access of your computer hardware. C language is also known as building block of function because all the programming task is implemented through function whether it is user defined or built in any library function. Mainly C language is used for system programming from the time of it had been invented.

C Language Introdunction

C language is general purpose computer programming language support structure approach of programming. It is in the category of high level programming language with low level feature which enables you to direct access of your computer hardware. C language is also known as building block of function because all the programming task is implemented through function whether it is user defined or built in any library function. Mainly C language is used for system programming from the time of it had been invented.

July, 2010 A7-R4: INTRODUCTION TO DBMS

 July, 2010

A7-R4: INTRODUCTION TO DBMS

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 Description of data stored in database is called
A) Schema
B) Meta Data
C) Information
D) None of the above
1.2 When one transaction updates a database item and then transaction fails for some reason.
The updated item is accessed by another transaction before it is changed back to its original
value is a
A) Lost update
B) Temporary update
C) Incorrect summary
D) None of the above

January, 2011 A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEM

January, 2011

A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEM

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 Given the relation schema:
EMPLOYEE(EMP_NUM,EMP_NAME, JOB_CODE)
JOB(JOB_CODE, JOB_DESCRIPTION)
What is the cardinality of relationship between entities EMPLOYEE and JOB?
A) One to One
B) One to Many
C) Many to One
D) Many to Many
1.2 Given the relation schema R(A,B,C,D)and functional dependencies C-->B and AB-->C,D.
What is the highest normal form of Relation R?
A) 2NF
B) 3NF
C) BCNF
D) 1NF

July, 2011 A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEM

July, 2011

A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEM

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 A view is a
A) Base table
B) Derived table
C) Named derived table
D) None of the above
1.2 System failures are also known as
A) Soft crashes
B) Media crashes
C) Hard crashes
D) System failures are non-existent

January, 2012 A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEM

January, 2012

A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEM

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 Which one of the following is not an example of 1:N relationship?
A) Faculty-belongsto-Department
B) BANK-has-Branches
C) University-has-Vicechancellor
D) None of the above
1.2 Consider the relation R(ABCDE) with following functional dependencies:
AB ® C, CD ® E, DE ® B
The key of the relation is
A) AC
B) AB
C) ABD
D) A

July, 2012 A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEMS

July, 2012

A7-R4: INTRODUCTION TO DATABASE MANAGEMENT SYSTEMS

PART ONE

(Answer all the questions)

1. Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “tear-off” answer sheet attached to the question paper, following instructions therein. (1x10)

1.1 The language used application programs to request data from the DBMS is referred to as
A) DML
B) DDL
C) Query Language
D) All of the above
1.2 When two transactions run concurrently types of problems encounter are
A) Data delete Problem, Dirty read problem, Incorrect summary problem
B) Lost update problem, Dirty read problem, Incorrect summary problem
C) Lost update problem, Data delete Problem, Incorrect summary problem
D) Lost update problem, Dirty read problem, Data delete Problem

Artistic Website Full Source Code Free Download

Artistic Website Full Source Code Free Download

If you are art lover then this website is best for you. Virtual it seems that you are working on letter pad.Because a true letter pad is used as main background image for all the pages. If you want to make a website with a traditional graphic like letter then this template is for you.

Feature

• Letter pad background
•  Article look
• Light weight