Mastering SQL: From Basics to Advanced with 50 Use Case Scenarios

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What is SQL?: SQL (Structured Query Language) is a language used to manage and manipulate databases. It’s essential for managing data in relational database management systems (RDBMS) like MySQL, PostgreSQL, and SQL Server.

Basic Concepts:
  • Database: A collection of organized data.
  • Table: A collection of related data entries in rows and columns.
  • Row: A single record in a table.
  • Column: A field in a table that contains data of the same type.
Setting Up the Environment:
    • Install a Database Management System (DBMS):

    Popular choices include MySQL, PostgreSQL, SQLite, and SQL Server. Download and install one on your local machine.

    Creating a Database:
    CREATE DATABASE ecommerce;
    Using the Database:
    USE ecommerce;