SQL or Structured Query Language is a popular program language specialized in managing and manipulating relational database. The language common query including update, modify, insert or remove data. Programmer need another language to work with SQL to create complete application to interact with data.
Data scientist use SQL to interact with relational database like MySQL, Ms Access, Sybase, Oracle, Postgres and SQL server. SQL ability to manipulate data on all structure data in database resulting one of the of data scientist to pick.
This section concentrate on SQL language and How to use it for data science purpose.