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p0003.html
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<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="pagestyle.css">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>What is SQL?</title>
</head>
<body>
<main>
<section>
<h1 class="maintext">What is SQL?</h1>
<img src="download.png" alt="sql image">
<p class="maintext">SQL stands for Structured Query Language. It's a standard computer language designed specifically for managing and manipulating data within a relational database.
Think of it as a way to:
<ul>
<li>Ask questions about the data stored in a database (e.g., "What are the names of all customers who live in California?").</li>
<li>Make changes to the data (e.g., "Add a new customer to the database").</li>
<li>Organize and structure the data itself.</li>
</ul>
In simpler terms, SQL is like a universal language that allows you to communicate with databases, regardless of the specific database system you're using (like MySQL, PostgreSQL, or SQL Server).
Key concepts in SQL include:
Tables: These are like spreadsheets, organizing data into rows and columns.
Queries: These are the questions or commands you use to retrieve or modify data.
Databases: These are collections of related data, often organized into tables.</p>
</section>
</main>
</body>
</html>