{"id":81829,"date":"2020-11-04T09:25:00","date_gmt":"2020-11-04T08:25:00","guid":{"rendered":"https:\/\/multi.datascientest.com\/?p=81829"},"modified":"2023-10-30T18:22:35","modified_gmt":"2023-10-30T17:22:35","slug":"sql-learn-all-about-the-programming-language-for-databases","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/sql-learn-all-about-the-programming-language-for-databases","title":{"rendered":"SQL: Learn all about the programming language for databases"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"81829\" class=\"elementor elementor-81829\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3caddb1 e-flex e-con-boxed e-con\" data-id=\"3caddb1\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4f5d3cd elementor-widget elementor-widget-text-editor\" data-id=\"4f5d3cd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><strong>SQL is a programming language for manipulating databases. Discover everything you need to know about it: how it works, use cases, learning methods\u2026<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c250d7f elementor-widget elementor-widget-text-editor\" data-id=\"c250d7f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">SQL or \u201c<\/span><b>Structured Query Language<\/b><span style=\"font-weight: 400;\">\u201d is a programming language used to manipulate data and relational database systems.. This language mainly <\/span><b>allows communication with databases<\/b><span style=\"font-weight: 400;\"> in order to manage the data they contain.<\/span><\/p><p><span style=\"font-weight: 400;\">It allows to store, <\/span><b>manipulate and retrieve these data<\/b><span style=\"font-weight: 400;\">. It is also possible to perform queries, to update data, to reorganize them, or to create and modify the schema and structure of a database system and to <\/span><b>control access<\/b><span style=\"font-weight: 400;\"> to its data.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c9daf7c e-flex e-con-boxed e-con\" data-id=\"c9daf7c\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e46d47d elementor-widget elementor-widget-heading\" data-id=\"e46d47d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h3 class=\"elementor-heading-title elementor-size-default\">The history of SQL<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84fd542 elementor-widget elementor-widget-text-editor\" data-id=\"84fd542\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The history of SQL began in 1969, when <\/span><b>IBM researcher<\/b> <b>Edgar F. Codd <\/b><span style=\"font-weight: 400;\">defined the relational database model. This model is based on the association of \u201c<\/span><b>keys<\/b><span style=\"font-weight: 400;\">\u201d with various data. For example, a username can be associated with a real name and a telephone number.<\/span><\/p><p><span style=\"font-weight: 400;\">A few years later, IBM created a language for relational database management systems based on the work of Codd. This language was first called <\/span><b>SEQUEL<\/b><span style=\"font-weight: 400;\">, for \u201cStructured English Query Language\u201d. After several implementations and revisions, it was finally called <\/span><b>SQL<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Testing began in 1978, cand then IBM began to develop commercial products such as <\/span><b>SQL\/DS<\/b><span style=\"font-weight: 400;\"> in 1981 and DB2 in 1983. Other vendors will follow, such as <\/span><b>Sybase<\/b><span style=\"font-weight: 400;\">, <\/span><b>Ingres<\/b><span style=\"font-weight: 400;\">, or <\/span><b>Oracle<\/b><span style=\"font-weight: 400;\"> which launched its first product in 1979.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70f18fa elementor-widget elementor-widget-spacer\" data-id=\"70f18fa\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-column .elementor-spacer-inner{height:var(--spacer-size)}.e-con{--container-widget-width:100%}.e-con-inner>.elementor-widget-spacer,.e-con>.elementor-widget-spacer{width:var(--container-widget-width,var(--spacer-size));--align-self:var(--container-widget-align-self,initial);--flex-shrink:0}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container,.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer,.e-con>.elementor-widget-spacer>.elementor-widget-container,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer{height:100%}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner{height:var(--container-widget-height,var(--spacer-size))}<\/style>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-97f51d5 e-flex e-con-boxed e-con\" data-id=\"97f51d5\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-15d5124 elementor-widget elementor-widget-heading\" data-id=\"15d5124\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How does SQL work?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e794dec elementor-widget elementor-widget-text-editor\" data-id=\"e794dec\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Applications can be programmed with different languages like <\/span><span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/datascientest.com\/en\/python-the-most-popular-programming-language\">Python<\/a><\/strong><\/span><span style=\"font-weight: 400;\">, PHP or Ruby. However, historically, databases do not understand these languages. <\/span><b>Until recently<\/b><span style=\"font-weight: 400;\">, they only understood SQL (although things have changed a lot in the last few years).<\/span><\/p><p><span style=\"font-weight: 400;\">That\u2019s why learning SQL is essential for working in the fields of application development or web development. Before being able to use it, it is necessary to learn its <\/span><b>markup<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">This is true for all programming languages. However, SQL has a unique characteristic that distinguishes it from other languages : <\/span><b>the concept of tables<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Indeed, a database is made of tables. Each of these tables is composed of columns and rows, and represents a set of data. Therefore, SQL allows you to create or manipulate tables.<\/span><\/p><p><span style=\"font-weight: 400;\">Several SQL commands are frequently used to work with databases such as \u201c<\/span><b><i>CREATE DATABASE<\/i><\/b><span style=\"font-weight: 400;\">\u201d or \u201c<\/span><b><i>CREATE TABLE<\/i><\/b><span style=\"font-weight: 400;\">\u201d.<\/span><\/p><p><span style=\"font-weight: 400;\">The \u201c<\/span><b><i>SELECT<\/i><\/b><span style=\"font-weight: 400;\">\u201d command allows you to find or extract data from a database. \u201c<\/span><b><i>UPDATE<\/i><\/b><span style=\"font-weight: 400;\">\u201d allows you to adjust or edit data, and \u201c<\/span><b><i>DELETE<\/i><\/b><span style=\"font-weight: 400;\">\u201d allows you to delete some data.<\/span><\/p><p><span style=\"font-weight: 400;\">These are just a few examples of very <\/span><b>commonly used commands<\/b><span style=\"font-weight: 400;\">, to give you an overview of how SQL works. The more complex the database, the more commands the user will need to use.<\/span><\/p><p><span style=\"font-weight: 400;\">These commands are used to <\/span><b>make queries<\/b><span style=\"font-weight: 400;\"> to find\/manipulate the data in databases. The system interprets and processes these commands, for example to create a new record in a database.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fb9d15 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"8fb9d15\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-engineer-course\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn to manage databases<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dd2707b e-flex e-con-boxed e-con\" data-id=\"dd2707b\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ca2ebcc elementor-widget elementor-widget-heading\" data-id=\"ca2ebcc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What is SQL used for?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1145f20 elementor-widget elementor-widget-text-editor\" data-id=\"1145f20\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\"><strong>SQL is used in all areas where databases are used<\/strong>. In other words, it can be found in almost any field where data is generated and analyzed.<\/span><\/p><p><span style=\"font-weight: 400;\">In the <\/span><b>finance industry<\/b><span style=\"font-weight: 400;\">, banking and payment processing applications store data about financial transactions and users. These systems are built on <\/span><b>complex databases<\/b><span style=\"font-weight: 400;\"> and require the <\/span><b>use of SQL<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Similarly, music streaming applications such as <\/span><b>Spotify<\/b><span style=\"font-weight: 400;\"> or <\/span><b>Deezer<\/b><span style=\"font-weight: 400;\"> make intensive use of databases,<\/span><b> to store the vast catalogs of music files<\/b><span style=\"font-weight: 400;\"> from different albums by different artists.<\/span><\/p><p><span style=\"font-weight: 400;\">Social networks such as <\/span><b>Facebook<\/b><span style=\"font-weight: 400;\"> or <\/span><b>Instagram<\/b><span style=\"font-weight: 400;\"> use SQL <\/span><b>to store a user\u2019s profile information<\/b><span style=\"font-weight: 400;\"> such as their bio or geographic location. Every time a user creates a post or shares content, SQL updates the database.<\/span><\/p><p><span style=\"font-weight: 400;\">SQL is used to manipulate this data to find what the user is looking for, or to store data about the user and their preferences. Most of the most popular software relies heavily on SQL.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f51248 elementor-widget elementor-widget-spacer\" data-id=\"9f51248\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3f651e4 e-flex e-con-boxed e-con\" data-id=\"3f651e4\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ae9d1cd elementor-widget elementor-widget-heading\" data-id=\"ae9d1cd\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What are the most popular SQL database systems?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aca85e7 elementor-widget elementor-widget-text-editor\" data-id=\"aca85e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A database system is a program that allows a developer to work with a database through a <\/span><b>user interface<\/b><span style=\"font-weight: 400;\">. This allows databases to be manipulated in a more intuitive way, especially through pre-designed templates and building tools.<\/span><\/p><p><span style=\"font-weight: 400;\">These different tools simplify the life of the database programmer by <\/span><b>automating<\/b><span style=\"font-weight: 400;\"> the most common tasks such as cleaning the system. There are many of them.<\/span><\/p><p><span style=\"font-weight: 400;\">The most popular worldwide is <\/span><b>Oracle Database<\/b><span style=\"font-weight: 400;\">. This SQL database system is used in a wide range of industries, including data warehousing and online transaction processing.<\/span><\/p><p><span style=\"font-weight: 400;\">Another popular system is <\/span><b>MySQL<\/b><span style=\"font-weight: 400;\">, which is offered as open source and free of charge for individuals and companies. Small businesses and startups especially like it because it is free, and many open source applications also use it.<\/span><\/p><p><span style=\"font-weight: 400;\">For its Windows operating system, Microsoft offers its own SQL database management system called <\/span><b>SQL Server<\/b><span style=\"font-weight: 400;\">. This system is used in consumer software and on web servers running on Windows, which gives it a large user base.<\/span><\/p><p><span style=\"font-weight: 400;\">Finally, <\/span><b>PostgreSQL is MySQL\u2019s main competitor<\/b><span style=\"font-weight: 400;\">. It is another open source database system, used by many startups because it is free. This system is compatible with all major OS such as macOS, Windows and Linux. Unlike other systems such as SQL Server, PostgreSQL makes a point of following the standard SQL syntax which makes it much easier to learn.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f00ac2e elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"f00ac2e\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-engineer-course\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover SQL syntax<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0dcbc58 elementor-widget__width-initial elementor-widget elementor-widget-video\" data-id=\"0dcbc58\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=WzfDLqt-WIg&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-video .elementor-widget-container{overflow:hidden;transform:translateZ(0)}.elementor-widget-video .elementor-wrapper{aspect-ratio:var(--video-aspect-ratio)}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{height:100%;width:100%;display:flex;border:none;background-color:#000}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-wrapper{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .elementor-open-inline .elementor-custom-embed-image-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background-size:cover;background-position:50%}.elementor-widget-video .elementor-custom-embed-image-overlay{cursor:pointer;text-align:center}.elementor-widget-video .elementor-custom-embed-image-overlay:hover .elementor-custom-embed-play i{opacity:1}.elementor-widget-video .elementor-custom-embed-image-overlay img{display:block;width:100%;aspect-ratio:var(--video-aspect-ratio);-o-object-fit:cover;object-fit:cover;-o-object-position:center center;object-position:center center}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-custom-embed-image-overlay{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-custom-embed-image-overlay img{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .e-hosted-video .elementor-video{-o-object-fit:cover;object-fit:cover}.e-con-inner>.elementor-widget-video,.e-con>.elementor-widget-video{width:var(--container-widget-width);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1a18b4 elementor-widget elementor-widget-spacer\" data-id=\"a1a18b4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e9ce992 e-flex e-con-boxed e-con\" data-id=\"e9ce992\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1c0de5e elementor-widget elementor-widget-heading\" data-id=\"1c0de5e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How do I learn SQL?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8e7da1 elementor-widget elementor-widget-text-editor\" data-id=\"f8e7da1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">To learn to use SQL, you can turn to <\/span><b>DataScientest\u2019s training program<\/b><span style=\"font-weight: 400;\">. Our Data Engineer training will teach you how to handle SQL and manipulation of databases, and will give you all the skills to become a <\/span><a href=\"https:\/\/datascientest.com\/en\/data-engineer-course\"><span style=\"font-weight: 400;\"><span style=\"text-decoration: underline;\"><strong>Data Engineer<\/strong><\/span><\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">All of our training courses adopt a <\/span><b>Blended Learning approach<\/b><span style=\"font-weight: 400;\"> combining face-to-face and distance learning, and can be done in BootCamp or Continuous training.<\/span><\/p><p><span style=\"font-weight: 400;\">At the end of the course, you will receive a degree certified by the Sorbonne University and you will be ready to work as a <\/span><b>Data Engineer<\/b><span style=\"font-weight: 400;\">. Among our alumni, <\/span><b>93%<\/b><span style=\"font-weight: 400;\"> found a job immediately after their training.<\/span><\/p><p><span style=\"font-weight: 400;\">If you encounter a problem or difficulty while learning or using SQL, you can check <\/span><a href=\"https:\/\/datascientest.com\/en\/blog-en\"><span style=\"font-weight: 400;\"><span style=\"text-decoration: underline;\"><strong>our blog<\/strong><\/span><\/span><\/a><span style=\"font-weight: 400;\">. Or you can also turn to <\/span><b>online communities<\/b><span style=\"font-weight: 400;\"> for help and expertise. You can find support from experienced programmers on platforms like Stack Overflow, Quora, Reddit or StackExchange.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6f5327 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"d6f5327\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover DataScientest\u2019s training courses<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b9e63ba e-flex e-con-boxed e-con\" data-id=\"b9e63ba\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-acbfed2 elementor-widget elementor-widget-html\" data-id=\"acbfed2\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"How does SQL work?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Applications can be programmed with different languages like Python, PHP or Ruby. 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Discover everything you need to know about it: how it works, use cases, learning methods\u2026 SQL or \u201cStructured Query Language\u201d is a programming language used to manipulate data and relational database systems.. This language mainly allows communication with databases in order to manage the data they contain. [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":166445,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2425],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SQL: Learn all about the programming language for databases<\/title>\n<meta name=\"description\" content=\"SQL is a programming language for manipulating databases. 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