Backend Development

Please visit the Scaler Academy website. Has anybody ever seen similar things? Have you seen the right-hand form of this form? Please fill out the contact information to reserve the demo course. Have we ever wondered how to do this with a red button? Where is the info going? Do we need any more help to keep this data safe? What are some mechanisms to make the process disappear? It certainly does! It's called a backend. Nowadays we mainly utilize the internet in all of our activities. It has snatched everything we're doing from reservations and meeting people virtually through telephone conversations.

Tell me the difference between frontend and backend web development?

The short answer would be that the content is generated on the front end (client-side) while all business logic exists on the back end (server-side). However, it doesn't tell the full story. Let's try to answer more of this question in-depth by looking into some popular languages used with both technologies, starting with JavaScript.

JavaScript is probably one of the most popular programming languages when it comes to developing things for browsers. With it you can generate HTML user interfaces dynamically without having to refresh your page when something changes in your application - just change what you want to code and voila! You have a new feature. The same language can be behind a backend as well, for example, Node.js. In that case, it's used to create server-side applications which are way faster than those built with PHP or Ruby because of their concurrent nature. Ionic is a great framework you can use to build truly native apps with JavaScript and AngularJS.

As a web developer you'll probably have heard about the LAMP stack before: Linux, Apache, MySQL, and PHP/Python/Perl. The first three form the operating system level while the last one stands for a programming language(s) often used for creating dynamic frontend applications - they require an enormous amount of memory and CPU cycles so using them on low-powered devices would be pointless. They're also not the most secure solutions out there which is why Nginx comes with a module called Memcached. It's a caching mechanism for web applications that reduces the load on MySQL and speeds up responses to users' requests by storing data required for rendering pages in memory instead of querying a database all the time.

Nginx, as many programmers know, is a web server application that handles HTTP traffic as well as streaming multimedia content through HTTP or other protocols. In this role, it can be used as a standalone solution or as part of Apache's worker MPM. Whew! Let me summarize what I just said: if you create client-side apps using HTML/CSS/JavaScript you'll need a stack consisting of LAMP components that need to be installed on a Linux-based system. If you create server-side apps with Node.js, you'll use an MPM called Nginx along with MySQL and Memcached as the back-end components (on a Linux machine) and a framework such as Ionic.

Each type of application will require a different toolkit, but one thing that's always true is that you need quick access to data to show your customers that you're the master of the house. That is why we have SQL. What is it? It stands for Structured Query Language and isn't something new - it's been around since the 80s! However, this doesn't make it obsolete or "so old-fashioned" - on contrary, most programmers still use it today because it allows them to communicate with relational databases very quickly and easily. If you're really into developing web apps there is a great chance that sooner or later you'll have come across MySQL - supports all kinds of queries you can think of and is used by backend developers all over the world.

SQL stands for Structured Query Language, which was first created in... wait, let me check my browser history... 1982! It's still being used today because it's so convenient when it comes to querying relational databases.

As with everything in life, there are pros and cons to using different frameworks for creating web apps. I'll just mention a few that will help you understand what I'm talking about: AngularJS is awesome if you want to build fast applications that have complicated logic behind them or require real-time consultations with servers - it's also perfect if you have to use your app on multiple devices since it supports smartphones as well as desktops. On the other side, Ionic 2 is great for creating simple apps that are meant to run on smartphones - it'll download much faster because of their nature. If you're making an application that needs more than one page, AngularJS will be your choice and if you want to create a native mobile app with just HTML and JavaScript - Ionic 2.

The battle between frameworks goes on and on and can't stop since there's always something new created by either corporations or the open-source community. They all have different pros and cons so choosing the right one is incredibly important... but at the same time pretty hard as well! And now finally we come to what this article was about: SQL vs NoSQL. You'd think they both serve the same purpose, but they do not (well, sort of).

SQL stands for Structured Query Language, so if you want to know more about it - just click here or search on Wikipedia. NoSQL isn't a language per se - it's a type of database system that doesn't support SQL statements and instead uses APIs with richer data structures. This means that one can't query them in the same way as relational databases are being queried - they have their own rules. There are many types of NoSQL databases such as DocumentDBs or Graph DBs which are used by companies all over the world since storing data is much easier this way. However! Keeping complex logic on the client-side doesn't look like a very good idea, so most companies choose to place the database on the servers and do everything else with JavaScript.

As you can see - knowing SQL is a must if you want to create Python or Node.js applications with a back-end system that uses data pools instead of NoSQL solutions. People who know SQL can easily adjust to any type of app later on since all they need is some time to learn the ins and outs of a new framework. And last but not least, most web apps rely on databases because their main purpose is serving as storage for users' information!

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What is backend development?

It's the creation of a system (using any programming language) that stores and manipulates data for web-based or mobile applications. This process is done by creating "backend systems" that store and manipulates data. The backend development field requires back end developers to know both front-end and back-end technologies since they're all connected in one way or another!

SQL vs NoSQL: the final battle! Since NoSQL isn't a language, we can't compare it to SQL. With so many types of databases out there, it would be almost impossible to choose just one type and say: this is better than all others! That's why we'll focus on two of the most popular forms and see how they contrast with each other.

Front-end vs back-end development

As mentioned earlier, front-end development is the process of making a web/mobile app look pretty and function properly while back-end development is everything that goes on behind the scenes. With this in mind, it's easier to understand how important it is for full stack developers to know both NoSQL and SQL!

DocumentDB vs Graph DBs DocumentDB allows storing data as documents which means there are no predefined schemas - just put any data you want into fields that don't exist beforehand (you can do that with relational databases too). Storing data manually might seem hard at first but once you get used to it, your life becomes much easier since you can store anything anywhere! There are three types of operations supported by DocumentDB: create/read/update/delete. Or CRUD, as it is called everywhere! With Graph DBs you work with a schema and define relations between tables like: "this column points to that other one". This allows for fast writing and reading and makes the whole thing much more organized since we know what our data looks like even before we've created it! But on the other hand, these relations make writing complex queries harder since they must be handled by apps written in backend programming languages such as Java or C#.

What can we do with SQL?

As you might know, relational databases are the ones that support querying using SQL language (more details ). The most popular relational databases used and supported by all major back end programming languages include MySQL, PostgreSQL, and MSSQL. If you want to create a web app - use one of these databases since they're full-featured, well documented, and easy to use even for beginners. And last but not least - they offer high performance and reliability which is very important because apps such as these must be always up and running no matter what happens!

Should I learn frontend development or backend development?

Both are very important but it depends on your final goal. If you want to become a full-stack developer, then obviously you'll need to know both! Learning just backend or frontend development will make you be able to create either front-end or back-end solutions for web/mobile app projects. But since there are still many projects out there that require both (even if they're mostly used by small companies), learning them both will give you the upper hand in the job market no matter what form of development you choose in the end.

What's better - server-side languages or client-side languages?

This is another question that has no definitive answer because it depends on what exactly you're to do. Server-side languages like C#, Java, NodeJS, Ruby, and Python are used to create back-end systems while client-side languages like JavaScript (and related technologies such as HTML and CSS) are used to make web/mobile apps that run in browsers or on mobile devices. If you're going to work with either front-end or back-end development - knowing at least one of these two will give you a valuable skill!

Tell me the difference between front-end development and web design?

Web design is a broad term that includes front-end and back-end web development. It's everything that we do that lets users access the site we've created by inputting an address in their browsers. If you're going to learn just one of them - go for the front-end since it'll let you create both "design" and "functionality" parts of your website independently.

What tools should I use if I want to code for iOS?

All the same as those used when coding for Android! There are, however, slight differences between Objective C (used by Apple) and Java (used by pretty much everybody else). The main similarity lies in their programming languages: no matter which OS you choose - you'll need to learn C or C++ to create apps that work with the hardware. There are also cross-platform frameworks that allow you, in some cases, code just once and make it work on both Android and iOS (ex. Xamarin).

What's the difference between .Net and Java?

Similarities: both support object-oriented programming; their primary function is creating back-end systems; they require compiling before running; they're managed languages (more details ). Differences: .NET supports languages like C# while Java supports primarily JVM (Java Virtual Machine) based languages like Clojure, Groovy, Scala. Other than that - there are a few other differences if we don't take into account that Java is more often used in the context of mobile development while .NET is more often used for backend web development (and not always).

What's the difference between Android and iOS?

Android, like Windows, is an operating system which means that it gives you the ability to create apps that work on any hardware. You can't do that with iOS since it only works on Apple hardware. However - if you want your app to be available on both platforms at once (ex. cross-platform game) - use the Xamarin framework!

Can I code without knowing English?

Of course, you can! So long as your language uses alphabet characters (more details ) - it'll be enough to learn to program. If you're really bad in English but good in your native language (like Hungarian or Russian) - you can use programming tutorials in your language.

What backend skills are needed?

If you're planning on working with mobile apps, you'll probably need to know more than just the basics. If your app is going to rely heavily on backend functions (ex. analytics), make sure that you know how to use them! Basic knowledge of databases (MongoDB, MySQL) is also recommended if your app needs data storage/retrieval.