Web Developer

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SQL

Structured Query Language (SQL) is a programming language that helps web developers manage and interact with relational databases: 
 
 
    • What it does
      SQL can be used to store, update, remove, search, and retrieve information from a database. It can also be used to create new databases and tables, and to set permissions on tables and procedures. 
       
       
    • Why it’s important
      SQL is especially important for building websites that use dynamic data, which must be stored in relational databases. 
       
       
  • How to learn it
    SQL is easy to understand and learn, and there are many online courses available. It’s similar to English and has few keywords. 
     
     
  • How it’s used
    SQL is used by many different database systems, including MySQL, PostgreSQL, and SQL Lite. 
     
     
Here are some other things to know about SQL:
  • SQL is flexible and scalable, and can be used to build applications of all sizes. 
     
     
  • Schema branching allows multiple versions of table schemas to exist within one database. 
     
     
  • A database is like an advanced version of Microsoft Excel or Google Sheets, and it makes it easier to store large amounts of data.