"SQL" stands
for "Structured Query Language." It is a programming language with
specialised functionality for managing and modifying relational databases. By
defining, querying, manipulating, and updating data in a database, SQL is used
to interact with it. It offers a standardised method of interacting with
databases and carrying out numerous activities, including data retrieval, record
insertion, record update, and data removal.
SQL is widely used in a
variety of database management systems (DBMS) such as MySQL, PostgreSQL,
Microsoft SQL Server, Oracle Database, and SQLite, among others. It is a
non-procedural language, meaning that users only need to specify what they want
to be done rather than how to do it.
SQL is a powerful tool
for working with databases, and its syntax is relatively simple and easy to
learn. It is essential for anyone involved in database administration, data analysis,
software development, or any other field where working with structured data is
required.
Some common SQL commands include :-
SELECT :- Used to retrieve data
from the database.
INSERT INTO :- Used to add new
records into a table.
UPDATE :- Used to modify existing
records in a table.
DELETE :- Used to remove records
from a table.
CREATE TABLE :- Used to create a
new table in the database.
ALTER TABLE :- Used to modify the
structure of an existing table.
JOIN :- Used to combine data from
two or more tables based on related columns.
