Structured Query Language (SQL) is a language for querying databases.

SQL, generally pronounced sequel, is an acronym that stands for Structured Query Language (not Standardized).

One subset of the SQL standard consists of the DDL - Data Definition Language which is used to create tables and constraints.

e.g:

  1. CREATE
  2. DROP
  3. ALTER

Another subset is the DML - Data manipulation language

e.g.

  1. SELECT
  2. INSERT
  3. UPDATE
  4. DELETE

The final "standard" subset of commands is the DCL - Data Control Language

e.g.

  1. GRANT
  2. REVOKE

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