Welcome to the SQL Basics Tutorial! If you're new to SQL or looking to brush up on your skills, this guide will help you get started. SQL, which stands for Structured Query Language, is a standard language for managing and manipulating databases.

Key Concepts

Here are some of the fundamental concepts you should be familiar with:

  • Databases: A collection of organized data stored and accessed electronically.
  • Tables: A structure that organizes data in rows and columns.
  • Columns: The fields within a table that hold specific types of data.
  • Rows: The individual records within a table.

Syntax

Here's a simple example of SQL syntax to create a table:

CREATE TABLE employees (
    id INT,
    name VARCHAR(100),
    age INT
);

Common Commands

Here are some common SQL commands you'll use:

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

Resources

For more in-depth learning, check out our Advanced SQL Tutorial.

Here's an example of a table structure:

  • id: A unique identifier for each employee.
  • name: The name of the employee.
  • age: The age of the employee.

For a visual representation, consider the following image:

Employee Table Structure

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