SQL (Structured Query Language) is the language used to interact with relational databases. It allows you to create, retrieve, update, and delete data in your database.

Basic SQL Commands:

• SELECT: Retrieve data from a table.
• INSERT: Add new data to a table.
• UPDATE: Modify existing data in a table.
• DELETE: Remove data from a table.

Example Query:

SELECT Name, Age FROM Customers WHERE Age > 25;

This query retrieves the names and ages of customers who are older than 25.

CREATE TABLE Customers (
    CustomerID INT PRIMARY KEY,
    Name VARCHAR(50),
    Email VARCHAR(100)
);

This command creates a "Customers" table with fields for CustomerID, Name, and Email.