Introduction to SQL language
SQL is a programming language that is used to manage data stored in a relational database management system (RDBMS).
SQL pronounced as /ˈɛs kjuː ˈɛl/ or /ˈsiːkwəl/. SQL full form is Structured Query Language.
SQL has three components:
- Data Defination Language (DDL): The data definition language deals with the schema/Table/View creation and modification like, CREATE TABLE statement allows us to create a new table in the database and the ALTER TABLE statement helps in changing the structure of an existing table.
- Data Manupulation Language(DML): The data manipulation language helps to query data such as the SELECT statement and to update the data such as INSERT, UPDATE, and DELETE statements.
- Data Control Language (DDL): The