The Waterfall model and the Incremental Model are widely used in software development. The objective of having these models is to ensure that the software is developed in a systematic, organized and efficient manner. Read this article to find out more about the Waterfall model and the Incremental model ... Read More

The primary function of a communication system is to transfer a message signal from a sender to the receiver. In the process of data transfer, the signal used to transfer the data should have the necessary properties required for the transmission as per the transmission channel. Hence, there are some ... Read More

In computer networks, links are the pointers associated with files and directories. These links are of two types: Hard Links and Soft Links. A hard link is a direct reference to a file, while a soft link is a reference by name. Thus, a soft link points to a file by ... 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 ... Read More

In Database Management Systems (DBMS), the ways of designing databases at physical, logical, and view levels are referred to as Data Models. There are two popular data models− the ER Model and the Relational Model. The fundamental difference between the ER Model and the Relational Model is that the ER ... Read More

There are two types of addressing modes, namely, direct addressing mode and indirect addressing mode. In direct addressing mode, the actual address of the data is mentioned in the instructions itself. On the other hand, indirect addressing mode contains the effective address of the memory location where the actual address ... Read More

In practice, a lot of people use the terms digital signature and electronic signature interchangeably. Although a digital signature is a type of electronic signature, but they are not exactly the same. The most basic difference between a digital signature and an electronic signature is that a digital signature is ... Read More

An attachment to an electronic document that can be viewed as a signature is referred to as a digital signature. It is used to prevent the unauthorized alterations in a document. Thus, a digital signature is created for encrypting the document. On the other hand, the medium which is provided ... Read More

Both decoder and demultiplexer are types combinational logic circuits used for implementing different types of digital systems. However, the function of a decoder is completely different from that of a demultiplexer. A decoder is a combination logic circuit that decrypts an input data stream from one format to another, whereas ... Read More

Both data warehouses and data marts serve the same purpose; they are data repositories. However, we can differentiate a data warehouse from a data mart on the basis of the amount of data they can store. A data warehouse a large repository of data that is collected from different organizations, ... Read More