Back-end developers are the experts who build and maintain the mechanisms that process data and perform actions on websites. Unlike front-end developers, who control everything you can see on a website, back-end developers are involved in data storage, security, and other server-side functions that you cannot see.
Back-end developers create, code, and improve the server, server-side applications, and databases that, when combined with front-end codes, help create a functional, seamless experience for the end-user.

R is a programming language for statistical computing and graphics that you can use to clean, analyze, and graph your data. It is widely used by researchers from diverse disciplines to estimate and display results and by teachers of statistics and research methods.
R is an open-source programming language that is widely used as a statistical software and data analysis tool. R generally comes with the Command-line interface. R is available across widely used platforms like Windows, Linux, and macOS. Also, the R programming language is the latest cutting-edge tool.
R is better suited for data experimentation and exploration. Python is a better choice for large-scale applications and machine learning.

A Ruby on Rails developer is a web and mobile app development professional who is responsible for writing codes for application development in the Ruby on Rails interface. A Ruby on Rails developer may also be known as a software engineer, lead developer, front end developer or web developer.
Rails is a development tool which gives web developers a framework, providing structure for all the code they write. The Rails framework helps developers to build websites and applications, because it abstracts and simplifies common repetitive tasks.

Ruby is an open source, interpreted, object-oriented programming language created by Yukihiro Matsumoto, who chose the gemstone's name to suggest "a jewel of a language." Ruby is designed to be simple, complete, extensible, and portable.
What is Ruby used for? Ruby is mainly used to build web applications and is useful for other programming projects. It is widely used for building servers and data processing, web scraping, and crawling. The leading framework used to run Ruby is Ruby on Rails, although that's not the only one.

Rust is the main language we use to develop in-house and OSS software, and used for infrastructure/devops tools as well as cryptographic key management services.
Rust is syntactically similar to C++, but it provides increased speed and better memory safety. Rust is a more innovative system-level language in terms of safer memory management because it does not allow dangling pointers or null pointers

C is a structured, procedural programming language that has been widely used both for operating systems and applications and that has had a wide following in the academic community. Many versions of UNIX-based operating systems are written in C.
C programming language is a machine-independent programming language that is mainly used to create many types of applications and operating systems such as Windows, and other complicated programs such as the Oracle database, Git, Python interpreter, and games and is considered a programming foundation in the process of ..
C is also known as mother language of all programming languages.

C++ is an object-oriented programming (OOP) language that is viewed by many as the best language for creating large-scale applications. C++ is a superset of the C language. A related programming language, Java, is based on C++ but optimized for the distribution of program objects in a network such as the Internet.
What is the C++ language used for? C++ is a powerful general-purpose programming language. It can be used to develop operating systems, browsers, games, and so on. C++ supports different ways of programming like procedural, object-oriented, functional, and so on.
The C++ programming language (also referred to as C++ scripting language) is a general-purpose programming language that can be labelled in various ways, including—statically typed, free-form, multi-paradigm, and compiled.

Node. js (Node) is an open source development platform for executing JavaScript code server-side. Node is useful for developing applications that require a persistent connection from the browser to the server and is often used for real-time applications such as chat, news feeds and web push notifications.
Node. js is primarily used for non-blocking, event-driven servers, due to its single-threaded nature. It's used for traditional web sites and back-end API services, but was designed with real-time, push-based architectures in mind.
It is a used as backend service where javascript works on the server-side of the application. This way javascript is used on both frontend and backend. Node. js runs on chrome v8 engine which converts javascript code into machine code, it is highly scalable, lightweight, fast, and data-intensive.

What is PHP?
PHP is an acronym for "PHP: Hypertext Preprocessor" PHP is a widely-used, open source scripting language.
PHP (Hypertext Preprocessor) is known as a general-purpose scripting language that can be used to develop dynamic and interactive websites. It was among the first server-side languages that could be embedded into HTML, making it easier to add functionality to web pages without needing to call external files for data.
PHP is an open-source server-side scripting language that many devs use for web development. It is also a general-purpose language that you can use to make lots of projects, including Graphical User Interfaces (GUIs).

javaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting data in web applications (e.g., sending some data from the server to the client, so it can be displayed on a web page, or vice versa).
JavaScript Object Notation, more commonly known by the acronym JSON, is an open data interchange format that is both human and machine-readable. Despite the name JavaScript Object Notation, JSON is independent of any programming language and is a common API output in a wide variety of applications.
A JSON object contains zero, one, or more key-value pairs, also called properties. The object is surrounded by curly braces {} . Every key-value pair is separated by a comma. The order of the key-value pair is irrelevant.

Java is a widely used object-oriented programming language and software platform that runs on billions of devices, including notebook computers, mobile devices, gaming consoles, medical devices and many others. The rules and syntax of Java are based on the C and C++ languages.
Java is a general-purpose programming language that is class-based and object-oriented. The programming language is structured in such a way that developers can write code anywhere and run it anywhere without worrying about the underlying computer architecture. It is also referred to as write once, run anywhere (WORA).
Java is based on C and C++. The first Java compiler was developed by Sun Microsystems and was written in C using some libraries from C++. Java files are converted to bit code format using a compiler that the Java interpreter then executes. Java code runs on Java Virtual Machine (JVM)—the runtime environment.

Structured Query Language (SQL) is a standardized programming language that is used to manage relational databases and perform various operations on the data in them.
SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
An SQL SELECT statement retrieves records from a database table according to clauses (for example, FROM and WHERE ) that specify criteria. The syntax is: SELECT column1, column2 FROM table1, table2 WHERE column2='value';
SQL skills help data experts maintain, create and retrieve information from relational databases, which separate data into columns and rows. It also allows them to access, update, manipulate, insert and modify data efficiently.

MySQL is a relational database management system (RDBMS) developed by Oracle that is based on structured query language (SQL). A database is a structured collection of data. It may be anything from a simple shopping list to a picture gallery or a place to hold the vast amounts of information in a corporate network
It may be anything from a simple shopping list to a picture gallery or the vast amounts of information in a corporate network. To add, access, and process data stored in a computer database, you need a database management system such as MySQL Server.
SQL is a query programming language that manages RDBMS. MySQL is a relational database management system that uses SQL. SQL is primarily used to query and operate database systems. MySQL allows you to handle, store, modify and delete data and store data in an organized way.

Perl actually stands for "Practical Extraction and Report Language," but you don't really need to know that unless you want to impress your nerd friends. Perl is a scripting language which uses a syntax similar to C/C++. It is commonly used by Web programmers to create scripts for Web servers.
Perl is a high-level, interpreted, general-purpose programming language originally developed for text manipulation. It borrows many features from C and Shell script and is used for system administration, networking, and other applications that involve user interfaces.
Perl is an Objected Oriented, dynamic and interpreter based programming language. In object-oriented programming, we have three main aspects, which are, object, class, and methods. An object is a data type which can be specifically called as an instance of the class to which it belongs.

What is Core Java? It is a part of the Java programming language that one can use for developing or creating a general-purpose app. Its main focus is to build such general applications. The J2SE (Java Standard Edition) is known as Core Java.
Core Java is the basic concept in Java-like variables, data types, arrays, OOPS, etc. You will see the overview of the entire core Java concepts here. Core Java is usually a part of the Java SE edition that allows you to develop general Java applications.

Python is a computer programming language often used to build websites and software, automate tasks, and conduct data analysis. Python is a general-purpose language, meaning it can be used to create a variety of different programs and isn't specialized for any specific problems.
Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
Python is often used as a support language for software developers, for build control and management, testing, and in many other ways. SCons for build control. Buildbot and Apache Gump for automated continuous compilation and testing.

Oracle is a computer technology corporation best known for its software products and services like Java. Through the company's four main business segments—cloud and license, hardware, and services—Oracle sells its cloud-engineering services and systems and database management systems.
Oracle Database is the first database designed for enterprise grid computing, the most flexible and cost effective way to manage information and applications. Enterprise grid computing creates large pools of industry-standard, modular storage and servers.
Oracle Database is an RDBMS. An RDBMS that implements object-oriented features such as user-defined types, inheritance, and polymorphism is called an object-relational database management system (ORDBMS).

Note(Swift IS only for IOS Framework)
Apple created Swift, an open-source programming language, as a replacement for all languages based on C, including Objective C, C++, and C. The language was created in 2014 and released to the public as an open-source project in 2015 on Swift.org.
Swift is a robust and intuitive programming language created by Apple for building apps for iOS, Mac, Apple TV, and Apple Watch. It's designed to give developers more freedom than ever. Swift is easy to use and open source, so anyone with an idea can create something incredible.

Go, also known as Golang, is an open-source, compiled, and statically typed programming language designed by Google. It is built to be simple, high-performing, readable, and efficient.
Go is a lightweight, compiled, procedural language for microservices and API development. Python is an interpreted, object-oriented language for general purpose applications such as web application backends and mobile application development.
Go (also called Golang or Go language) is an open source programming language used for general purpose. Go was developed by Google engineers to create dependable and efficient software.

C# (pronounced "C sharp") is a simple, modern, object-oriented, and type-safe programming language. Its roots in the C family of languages makes C# immediately familiar to C, C++, Java, and JavaScript programmers.
C# (pronounced "See Sharp") is a modern, object-oriented, and type-safe programming language. C# enables developers to build many types of secure and robust applications that run in . NET. C# has its roots in the C family of languages and will be immediately familiar to C, C++, Java, and JavaScript programmers.

PostgreSQL is a relational database. It stores data points in rows, with columns as different data attributes. A table stores multiple related rows. The relational database is the most common type of database in use.
PostgreSQL is used as the primary data store or data warehouse for many web, mobile, geospatial, and analytics applications. The latest major version is PostgreSQL 12.
PostgreSQL is a relational database. It stores data points in rows, with columns as different data attributes. A table stores multiple related rows. The relational database is the most common type of database in use.

Is bash a language?
Bash is a powerful programming language, one perfectly designed for use on the command line and in shell scripts. This three-part series explores using Bash as a command-line interface (CLI) programming language.
Software developers rely on Bash for many development tasks. Bash can be used to automate software development tasks such as code compilation, debugging source code, change management and software testing. Network engineers use Bash to test, configure and optimize network performance on organizational networks.