Lec 1: What is SQL ? | What is Database ? | SQL Tutorial In Hindi | #sql

In SQL Lecture 1, you'll introduce the foundational concepts of databases and SQL. Here’s an overview of what you might cover:

1. What is SQL?
SQL (Structured Query Language) is a standard programming language used for managing and manipulating relational databases. It allows users to perform operations such as querying data, inserting, updating, and deleting records, as well as managing database structures (creating tables, defining relationships, etc.). SQL is critical for interacting with any relational database system.

2. What is a Database?
A database is a structured collection of data that is stored and accessed electronically. It allows users to store large amounts of information in a way that can be easily queried and manipulated. Databases are commonly used to store data for applications such as websites, business systems, and software programs. A relational database stores data in tables, where each table consists of rows (records) and columns (fields).

3. How SQL Works:
SQL works by interacting with a Database Management System (DBMS), such as MySQL, PostgreSQL, or SQL Server. When you write an SQL query, you send it to the DBMS, which processes the query and returns the results. For example, when you run a `SELECT` query, the DBMS searches the database for data that matches your criteria and returns it in a structured format.

4. Where to Use SQL:
SQL is used in a wide range of applications:
Web Development: SQL databases are used to store user data, product information, and more.
Business Applications: Companies use SQL to store customer data, inventory, financial information, and employee records.
Analytics and Reporting: SQL helps in querying large datasets to generate insights, reports, and summaries.
Mobile Apps: Many mobile applications store user data or content in SQL-based databases.

This lecture will lay the groundwork for understanding how to use SQL to interact with databases, offering both theoretical context and practical insights into the technology.


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