Beginner's Roadmap For Learning Sql.

 ✔️📚A beginner's roadmap for learning SQL:

1.Understand Basics:

Learn what SQL is and its purpose in managing relational databases.

Understand basic database concepts like tables, rows, columns, and relationships.

2.Learn SQL Syntax:

Familiarize yourself with SQL syntax for common commands like SELECT, INSERT, UPDATE, DELETE.

Understand clauses like WHERE, ORDER BY, GROUP BY, and JOIN.

3.Setup a Database:

Install a relational database management system (RDBMS) like MySQL, SQLite, or PostgreSQL.

Practice creating databases, tables, and inserting data.

4.Retrieve Data (SELECT):

Learn to retrieve data from a database using SELECT statements.

Practice filtering data using WHERE clause and sorting using ORDER BY.

5.Modify Data (INSERT, UPDATE, DELETE):

Understand how to insert new records, update existing ones, and delete data.

Be cautious with DELETE to avoid unintentional data loss.

6.Working with Functions:

Explore SQL functions like COUNT, AVG, SUM, MAX, MIN for data analysis.

Understand string functions, date functions, and mathematical functions.

7.Data Filtering and Sorting:

Learn advanced filtering techniques using AND, OR, and IN operators.

Practice sorting data using multiple columns.

8.Table Relationships (JOIN):

Understand the concept of joining tables to retrieve data from multiple tables.

Learn about INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

9.Grouping and Aggregation:

Explore GROUP BY clause to group data based on specific columns.

Understand aggregate functions for summarizing data (SUM, AVG, COUNT).

10.Subqueries:

Learn to use subqueries to perform complex queries.

Understand how to use subqueries in SELECT, WHERE, and FROM clauses.

11.Indexes and Optimization:

Gain knowledge about indexes and their role in optimizing queries.

Understand how to optimize SQL queries for better performance.

12.Transactions and ACID Properties:

Learn about transactions and the ACID properties (Atomicity, Consistency, Isolation, Durability).

Understand how to use transactions to maintain data integrity.

13.Normalization:

Understand the basics of database normalization to design efficient databases.

Learn about 1NF, 2NF, 3NF, and BCNF.

14.Backup and Recovery:

Understand the importance of database backups.

Learn how to perform backups and recovery operations.

15.Practice and Projects:

Apply your knowledge through hands-on projects.

Practice on platforms like LeetCode, HackerRank, or build your own small database-driven projects.

👀👍Remember to practice regularly and build real-world projects to reinforce your learning. 

Happy Learning 🥳 📚.