Anybody dealing with databases must comprehend the distinction between DDL and DML commands because it has an impact on how data is saved, accessed, and modified. A collection of commands called DDL are used to specify a database's structure. Database objects including tables, views, indexes, and constraints can be created, modified, and deleted using these commands. DDL statements specify how the data is arranged and accessed rather than altering the data that is stored in the database. DML, on the other hand, is a set of instructions used to work with the data that is kept in the ... Read More

GIF and PNG are types of image formats to store images. Both GIF and PNG are pixelbased image formats. Both use lossless compression algorithms and support transparency. GIF images support animation as well. Read this article to find out more about GIF and PNG formats and how they are different from each other. Let's start with a brief overview of these two image formats. What is GIF? GIF stands for Graphical Interchange Format. GIF is an image file format that uses lossless compression algorithm. Therefore, the GIF images are of high quality, but a GIF image supports only 256 colors. ... Read More

Both operating system and Kernel are types of system software. The basic difference between the two is that an operating system is a system software that acts as the interface between the users and the machine, while a kernel is a part of the operating system that converts user commands into machine language. Read through this article to find out more about operating systems and kernels and how they are different from each other. What is an Operating System? Operating System manages a computer and acts as an interface between user and computer. Operating system is the first program that ... Read More

Both SVG and PNG are types of image formats to store images. SVG is a vectorbased image format where an image is represented by set of mathematical figures, whereas PNG is a binary image format that uses lossless compression algorithm to represent images as pixels. Read this article to find out more about SVG and PNG file formats and how they are different from each other. What is SVG? SVG stands for Scalable Vector Graphics. It is a type of image file that uses vector graphics to display images, rather than the traditional raster graphics used by most image ... Read More

JPEG and GIF are types of image formats. JPEG uses lossy compression algorithm where the image may lose some of its data, whereas GIF uses lossless compression algorithm where there is no data loss. GIF images support animation and transparency. Read this tutorial to find out more about JPEG and GIF image formats and how they are different from each other. What is JPEG? JPEG stands for Joint Photographic Experts Group. JPEG is a raster image format. It uses the ".jpg" or ".jpeg" file extension. It uses a type of lossy compression to reduce file size, which means that some ... Read More

In asymmetric multiprocessing, all the processors are not identical and they follow a master-slave relationship; whereas in symmetric multiprocessing, all the processors are identical and they share the main memory. Read this tutorial to find out more about asymmetric and symmetric multiprocessing, and how they are different from each other. Let's start with a basic overview of asymmetric multiprocessing. What is Asymmetric Multiprocessing? Asymmetric multiprocessing is the use of two or more processors handled by one master processor. All CPUs are interconnected but are not self-scheduling. It is used to schedule specific tasks to a CPU based on priority and ... Read More

Both OCR and MICR are types input devices that use character recognition technologies to convert printed data into digital signals that can be processed by a computer. The most basic difference between an OCR and an MICR is that an OCR (Optical Character Recognition/Reader) uses optical effects for character recognition, while an MICR (Magnetic Ink Character Recognition/Reader) uses magnetic effects for character recognition. Read this article to find out more about OCR and MICR and how they are different from each other. What is OCR? OCR, short for Optical Character Recognition, is a technology to convert scanned documents into ... Read More

A printer is an output device that produces information or computer outputs on a paper. Depending upon the technology used, printers are classified into two categories namely, Impact Printers and Non-Impact Printers. An impact printer is one that operates by striking a printing head (made up of metal or plastic) against an ink ribbon, whereas a non-impact printer is one that prints characters and graphics without direct physical contact between the printing head and the paper. Read this tutorial to find out more about Impact and Non-impact Printers and how they are different from each other. What is an Impact ... Read More

The primary difference between holography and photography is that holography is a technology used to create three-dimensional (3D) images of an object, whereas photography is one that creates two-dimensional (2D) images of a three-dimensional object. Read this tutorial to find out more about Holography and Photography and how they are different from each other. What is Holography? Holography is a technique to generate 3-dimensional images using interference and diffraction of light. It uses a coherent and monochromatic source of light. A hologram is needed to regenerate an image. In other words, holography can be defined as the process of wave ... Read More

IPSec is a suite of protocols that provides security services during communications between networks. It supports network-level peer authentication, data origin authentication, data integrity, data encryption and decryption. It is often used to create a VPN.SSL is a networking protocol that provides a secure connection between a client and a server over the internet. It works at the transport layer. It is often used to secure the communication between a web browser and a web server.Read through this article to find out more about IPSec and SSL and how they are different from each other.What is IP Security (IPSec)?IPSec is ... Read More