SQL - Structured Query Language

SQL is a standard and language to use with relational databases. SQL stands for Structured Query Language.

It is possible to retrieve, update or add information using SQL.

When updating records, it is possible to impact only those that confirm to a condition of WHERE clause.

It is possible to establish relationships between several tables. In SQL it is done using equality between tables using data that is stored there.

Example of SQL databases are MySQL, Microsoft SQL database, Oracle. There are other SQL databases. I just name a few.

An opposite of SQL databases are NoSQL databases. NoSQL databases do not establish relationships between tables. Relationship between data is done via application.

Advantage of using NoSQL database is speed. Because of less complexity NoSQL databases are faster.

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