Batch Operating System
Computer systems of the 1960’s used card reader and punch cards as the primary input medium. The primary output devices were line printers, tape drives and punch cards. In these type ofRead More…
All posts by DreamMaker
What is Operating System?
An operating system is a system program that creates an interface between the user and the computer system. It provides an environment in which other programs can run smoothly and n efficientRead More…
What is Software?
In Simple words, software is a collection of instructions or a set of programs that performs a specific task. Computer software can be divided into two main categories: Application software System softwareRead More…
Transaction Control Language Statements (TCL)
Commit: Commit command is used to commit or save transaction permanently. It is similar to a save command of other windows based application. When we apply commit command all the transaction andRead More…
Class in C++
Class: “A Class is a user defined data type that combines both data and method into a single unit known as class”. “In other words, a class is a container which includesRead More…
Creating new table from existing table
It is easy to create a new table from the existing table instead of specifying a new structure. It creates a new table with the column specified into the select query. ItRead More…
Exception Handling
An exception is an abnormal condition that arises in a code at run time. In other words, an exception is a run-time error. An exception object describes a problem encountered during theRead More…
IN / NOT IN Clause
IN clause can be use for searching operation. It searches for the records with specific criteria. It displays those records that are matches with the values specified into the IN clause. ItRead More…
Compilation and Linking Of C Program
Linking of C program includes the following steps: Create a C-Program source file using any standard editor such as Turbo C or Turbo C++. Compile source file using C compiler. Modify programRead More…
Package
Java provides a mechanism for partitioning the class name space into more manageable sections known as the package. Packages are container for classes that are used to keep the class name spaceRead More…