SQL for beginners with :( PostgreSQL, MySQL, SQL Server )

SQL is a standard language for accessing and manipulating databases.

SQL is one of the most  in–demand tech skill used across many industries.

What is SQL?

SQL stands for Structured Query Language

What Can SQL do?

SQL lets you access and manipulate databases

SQL can execute queries against a database

SQL can retrieve data from a database

SQL can insert records in a database

SQL can update records in a database

SQL can delete records from a database

SQL can create new databases

SQL can create new tables in a database

SQL can create stored procedures in a database

SQL can create views in a database

SQL can filter data returned from a database

SQL can sort data returned by a database.

SQL can be used to truncate and drop tables.

PostgreSQL is a powerful, open source object–relational database system.

PostgreSQL is an advanced, enterprise–class, and open–source relational database system. PostgreSQL supports both SQL (relational) and JSON (non–relational) querying.

PostgreSQL is a highly stable database backed by more than 20 years of development by the open–source community.

PostgreSQL is used as a primary database for many web applications as well as mobile and analytics applications.

MySQL is a relational database management system based on SQL – Structured Query Language. The application is used for a wide range of purposes, including data warehousing, e–commerce, and logging applications. The most common use for mySQL however, is for the purpose of a web database.