Samsung Galaxy Z vs Galaxy S II | Galaxy Z vs Galaxy S2 Features, Performance, Design After a high of a smartphone as stunning as Galaxy S II, the Korean giant really deserves a rest but it is not the one to sit on laurels earned. It recently unveiled a watered down version in its […]
Difference Between Fluorine and Fluoride
The key difference between fluorine and fluoride is that fluorine is neutral whereas fluoride is negatively charged. The elements in the periodic table except the noble gases are not stable. Therefore, elements try to react with other elements to gain the noble gas electron configuration and achieve stability. Fluorine is an element that also has […]
Difference Between Ionic and Covalent Bonds
The key difference between ionic and covalent bonds is that ionic bonds occur between atoms having very different electronegativities whereas covalent bonds occur between atoms with similar or very low electronegativity differences. As proposed by the American chemist G.N.Lewis proposed that atoms are stable when they contain eight electrons in their valence shell. Most of […]
Difference Between Refractor and Reflector Telescopes
Refractor vs Reflector Telescopes | Refraction vs Reflection Telescopes Reflector and refractor are basically the main two types of telescopes mostly used in astronomy. They are also known as reflection telescopes and refraction telescopes. These are mainly optical devices, which use visible light to produce images of distant objects, such as planets, stars, nebulae and […]
Difference Between Semaphore and Mutex
Semaphore vs Mutex Semaphore is a data structure that is used to make sure that multiple processes do not access a common resource or a critical section at the same time, in parallel programming environments. Semaphores are used to avoid dead locks and race conditions. Mutex (Mutual Exclusion Object) is also used to avoid access […]
Difference Between Database and Spreadsheet
Database vs Spreadsheet Database and Spreadsheet are two ways that could be used to manage, store, retrieve and manipulate data. A spreadsheet is an application that allows user to work on an electronic spreadsheet similar to an accounting worksheet, whereas, a database is intended for easily organizing, storing and retrieving large amounts of data. In […]
Difference Between Digital Signature and Digital Certificate
Digital Signature vs Digital Certificate A digital signature is a mechanism that is used to verify that a particular digital document or a message is authentic. It provides the receiver a guarantee that the message was actually generated by the sender and it was not modified by a third party. Digital signatures are widely used […]
Difference Between DoS and DDoS
DoS vs DDoS DoS (Denial-of-Service) attack is a type of attack carried out by a single host that denies a certain service to its intended users, by either crashing or flooding the computer that is offering the service. DDoS (Distributed Denial-of-Service) attack is a DoS attack simultaneously carried out by multiple hosts. What is DoS? […]
Difference Between Insert and Update and Alter
Insert vs Update vs Alter Insert, Update and Alter are three SQL (Structured Query Language) commands used for modifying databases. Insert statement is used for inserting a new row to an existing table. Update statement is used to update existing records in a database. Insert and Update are Data Manipulation Language (DML) statements. Alter SQL […]
Difference Between Tax Return and Tax Refund
Tax Return vs Tax Refund Tax return and tax refund are two of the most commonly used terms in almost all tax systems. Tax is a financial charge imposed upon an individual or a legal entity by a state or a functional equivalent of a state, such that, failure to pay is punishable by law. […]