The Tech Storror

 Index Large books have indexes or indexes at the end to facilitate the search for various topics. Through it, it is known that a topic has been discussed on some page of that book. In the case of database also there is system of such index to find various data quickly. Such indexes increase the performance of searching for any information in the database. Simply put, an index is a pointer to data in a table. The created index is stored in a different location from that table. The main purpose of the index is to speed up data retrieval from the database. Indexes can be created or deleted without changing the data. However, queries may take longer if an index is deleted. Keep in mind that indexes occupy physical space and in some cases may be larger than the original data table. Databases need to create indexes to increase query performance. Indexes can be created during table creation or later. The create index statement creates an index for a column in a table. However, it should ...

When we hear programming languages ​​and programmers, we see nerd type people wearing glasses who sit all day on the computer typing like crazy on the black screen and create different kinds of software or computer programs. Some work with Windows software or Windows programs, some work with web development, some work with mobile applications, and many work with game development. Regardless of the development sector, these programming languages ​​and programmers are the only reason why everything we see and do on computer and mobile screens is possible. The fact that you can read this article by going to this website is also due to programming or web development. As I said, no matter what we do on computers or smartphones, everything is possible because of programming. However, today we are going to discuss the best 5 programming languages ​​that you can learn. Yeah Al that sounds pretty crap to me, Looks like Al that sounds pretty crap to me, Looks like Al that sounds pretty crap to m...

There was a time when science and technology were not so complex. We used to spend a lot of time entertaining to watch a few channels on our home television. Contact was made by letter, stamps were purchased from the post office, wrapped in a paper envelope, stamped and dropped in the mailbox for destination. Then the telephone set is actually a wired voice communication system. From the office to the court, people would take a telephone connection at home. Then the real mobile phone, but with it only voice calls could be made. That was not long ago, 15 years ago. The technology was very simple. But since 2005, high bandwidth (bandwidth key), affordable internet, computers, later smartphones and other technologies have changed the world. But one thing must be admitted, that is that the Internet is at the root of all our so-called modern technology. Everything is now online due to the vastness and convenience of the internet. We all rely on online now. Starting from television channels,...

 If you want to use multiple operating systems on a computer or use different versions of the same operating system, there are two methods open to you. The first is to use a dual boot system; And the second is to use virtual machines. Both methods are quite suitable for this job but there are many differences between them. Can't decide which of the two methods is right for you? Then today's post is for you. In today's post I will put some questions for you and if you can answer this question correctly then you can decide for yourself which method is suitable for you. Note that today's post will not discuss what dual boots and virtual machines are or who they are; Today I will try to say in simple language which of these two methods is suitable for your own use. So let's face the question. Have an advanced idea about PC? If you are an advanced user of PC then you can use dual boot setup. This is because it requires a lot of advanced skills to set up dual boot and del...

Currently USB Type-C is slowly joining a new trend. Its use is growing in mid-range to high-end electronics devices. And there is nothing new to say about it, maybe you already have it on your phone or new laptop or you are already using it. But the fact is that many people are already using this new standard USB Type-C (USB Type-C) but you may not know much about it. Honestly, I didn't even know the details until I did the research to write this article. For example: What is the difference between USB-C and USB 3.1? Are all USB-C capable of giving the same speed? I have been doing various research for this article for almost two days now and what I found in it can be really confusing for the average user - because all the USB Type-C connectors look the same but there are many differences between them. But don't worry, I'm just trying to break things down into simple words, "Let's move on." What is USB-C? Let's start with the orthodox, so what is USB-C? We...

 Are you worried about computer security and privacy? If not here's a new product just for you! Nowadays computers have become more personal than our moneybags. Here we store all the private and work data, do banking, login to the required account — far from being hacked, we don't want any relative to have physical access to this machine. Using a password can prevent anyone from physically using the PC, but if you use a family computer, you have to share your computer even if you don't want to. Besides, if you have younger brother or sister at home, you have to tell the password. So in your absence it becomes necessary to know when and how your computer is being used. In this article I will introduce you to some of the methods that you can easily grasp, who are using your computer in your absence. Use a spy cam If you have a webcam installed on your computer or if you use a laptop, there must be a webcam installed. Now naturally that camera can take pictures of anyone sitti...

Many people wonder how the music of hundreds of CDs can fit into a memory card equal to a little half an inch. Again a memory card is nothing compared to a hard drive. A hard drive is an efficient computer memory device that can store large amounts of data using simple magnetism. The microprocessor on your computer completes all the processes and tasks of the computer — but the hard drive is the device that allows you to store a large amount of data, music, digital photos, text documents, etc. It was a remarkable invention that originated in the 1950's, and surprisingly, its early form was in the form of cassette tapes How is it possible to store data with magnetism? The science behind magnetism is complex. But what happens if you bring a magnet to a piece of iron — you must know that technology বিজ্ঞান the science of magnets is complex but its simple application is much easier. A piece of iron does not have magnetism in the first place, but if you repeat a piece of iron with a mag...

 Nowadays if you want to learn full stack web development, you need to learn the basic structure of web, HTML and CSS as well as JavaScript and any one server side language, especially if you want to be a full stack (frontend + backend) developer. You can learn HTML, CSS and Vanilla JavaScript for frontend development and one of the frontend frameworks (React / Vue / Svelte). However, you have several options for the backend. You can learn and use Python or NodeJs, GOlang or Good-Old PHP for server side development or backend development. These 4 languages ​​are powerful enough for the backend. But nowadays you will hear many web developers or many in the web development community say that PHP is a dead language. There is no point in using PHP in 2020 and in any future web development project and beginners should now learn another server-side language by avoiding PHP. But how reasonable are these words? I don't think it's logical to think so. Is PHP really a dead language now? ...

 There are many other languages ​​besides programming languages ​​that we may not have heard of, and why they are not as popular as other popular languages. At present we understand modern programming language as Python, JavaScript, C ++, C Sharp, Java, Catlin, Dart. However, there are many other programming languages ​​out there that are not currently used or are rarely used in projects, so many of us do not even know their names. Today I'm going to talk about some of the programming languages ​​that you may have never heard of. Anyway, let's get straight to the main topic without further ado. As I said before, there are a number of programming related terms in this article, some of which I myself am not familiar with. So if you don't have some basic knowledge about programming, then maybe this article is not for you. In that case you can skip this post if you want! Gravity Gravity is a MIT licensed open-source programming language that was originally created for Android a...

Query Language User can easily retrieve information or data from database with query language. Operations such as entering data, retrieving data, modifying or deleting data in the database are called queries. The language with which queries are made is called query language. Most database management systems use query languages ​​to access the database. It is a high-level language. Using this language, it is possible to easily search and collect data from the database and perform various calculations according to the user's wishes. This language is higher level than any standard programming language. SQL and QUEL query languages ​​are currently used in microcomputers. Name some query languages (i) QUEL (Query Language) (ii) QBE [Query by Example] (iii) SQL (Structured Query Language) (iv) Server SQL Among these four query languages, SQL has gained the most popularity worldwide. According to ANSI standards, SQL has become the standard query language for relational databases. SQL and ...