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SQL for Beginner Data Scientist

Why SQL is one of the most valuable skills to learn?

Why it’s important to learn SQL?

I have grasped a lot of skills over the course of my life, but no technical skill more useful than SQL. SQL emerge to me as the most valuable skill for a few reasons:

  • SQL is beneficial across different roles and disciplines.
  • It is not really difficult to learn SQL.
  • It is one of the most searchable skills by hiring employers.

What is SQL?
SQL (Structured Query Language) is the primary language responsible for managing data held in a relational database management system (RDBMS).
SQL is used to query, insert, update and modify data. Most relational databases support SQL, which is an added benefit for database administrators (DBAs), as they are often required to support databases across several different platforms.

First developed in the early 1970s at IBM by Raymond Boyce and Donald Chamberlin, SQL was commercially released by Relational Software Inc. (now known as Oracle Corporation) in 1979. The current standard SQL version is voluntary, vendor-compliant and monitored by the American National Standards Institute (ANSI). Most major vendors also have proprietary versions that are incorporated and built on ANSI SQL, e.g., SQL*Plus (Oracle), and Transact-SQL (T-SQL) (Microsoft).

In simple words, SQL is the language we use to interact with a database.

SQL is among the most popular languages across desktop developers, web developers, sysadmins, DevOps, and data scientists:

Stackoverflow

Stack Overflow Survey 2019

I put together a series of articles called SQL for Beginner Data Scientist with seven articles. By reading it, you can learn SQL in a very pragmatical and enjoyable way.

1-Install PostgreSQL And pgAdmin

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1 Comment

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