![]() SQL can be pronounced two different ways. You can learn all of these skills in our interactive SQL courses.Ī guide to SQL cannot omit the pronunciation issue. Each keyword has a specific meaning and must appear in a certain order for the database to process it.Īdvanced SQL statements allow you to create multiple filters, group rows, join tables, calculate averages and sums, and do much more. ![]() ![]() You can see some of them in the statement above: SELECT, FROM and WHERE. SQL keywords are often written in uppercase for greater readability. …tells the database to display the titles and directors of movies ( SELECT title, director) that are stored in the movie table (FROM movie) and were released in 1994 ( WHERE release_year=1994). SELECT title, director FROM movie WHERE release_year=1994 This means that even non-programmers can figure out the meaning of some simple SQL queries. Although SQL requires a strict syntax, or order of words and commands, it is designed to be human readable. IBM invented SQL, or Structured Query Language, in the 1980s as a way to communicate with databases. That’s where our guide to SQL proceeds to the notion of a programming language. In order to access data in a database, however, you need to specify what you want to see. ![]() When you open an Excel sheet, you can see all the data right away. Below is an example of a very simple table in a database. A database is a set of tables that look similar to Excel sheets – they consist of columns that always store one kind of data and rows that hold information about specific items. In a spreadsheet, there are columns and rows which you can fill with data. You have probably used a spreadsheet program (like Excel). Some popular DBMS programs are Oracle, PostgreSQL, MySQL, Microsoft SQL Server, and SQLite. A DBMS can configure a database as well as add, delete, and display data. Going further with our guide to SQL, a database management system (or DBMS) is a computer program, just like an Internet browser or a word processor. SQL Fundamentals: Database Management System
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