A database is an organized collection of data that can be easily accessed, managed, and updated. Databases store information in a structured format, allowing users to retrieve and manipulate data efficiently. They are widely used in various applications, including websites, mobile apps, financial systems, and enterprise software.
SQL (Structured Query Language) is a standard language used to interact with relational databases. It allows users to create, read, update, and delete (CRUD) data using structured queries.
CREATE TABLE, ALTER TABLE, DROP TABLESELECT, INSERT, UPDATE, DELETEGRANT, REVOKECOMMIT, ROLLBACK, SAVEPOINTCREATE TABLE Students (
id INT PRIMARY KEY,
name VARCHAR(100),
age INT,
course VARCHAR(50)
);
INSERT INTO Students (id, name, age, course)
VALUES (1, 'Rahul Sharma', 21, 'Computer Science');
SELECT * FROM Students;This example creates a Students table, inserts a record, and retrieves all data.
Databases and SQL are fundamental to modern applications. Understanding how to work with SQL enables efficient data management. In the next tutorial, we will cover Creating and Managing Tables in SQL.
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