Mohamed Azarudeen Sql Senior Developer
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"I am a full-stack developer with extensive knowledge in SQL, ranging from beginner to advanced levels."
1. Introduction to SQL
What is SQL (Structured Query Language)?
Overview of databases and relational databases
Key SQL concepts: Tables, Rows, Columns
The role of SQL in data management
2. SQL Data Types
Numeric, String, Date/Time data types
Choosing the right data type for your columns
3. Basic SQL Queries
SELECT statement and basic filtering using WHERE
Sorting results with ORDER BY
Using DISTINCT to avoid duplicates
4. SQL Operators
Comparison operators: =, >, <, !=, BETWEEN, IN
Logical operators: AND, OR, NOT
Pattern matching with LIKE and wildcards (%, _)
IS NULL and IS NOT NULL
5. Joins in SQL
Inner Join: Combining matching rows
Left Join (or Left Outer Join): Including unmatched rows from the left table
Right Join (or Right Outer Join): Including unmatched rows from the right table
Full Join: Combining all rows from both tables
Self Join: Joining a table with itself
6. Grouping and Aggregation
GROUP BY statement
Aggregate functions: COUNT(), SUM(), AVG(), MIN(), MAX()
Filtering groups with HAVING clause
7. Subqueries
Introduction to subqueries (nested queries)
Subqueries in SELECT, FROM, WHERE, and HAVING clauses
Correlated vs. Non-correlated subqueries
8. SQL Data Modifications
Inserting data with INSERT INTO
Updating records with UPDATE
Deleting records with DELETE
Truncating data with TRUNCATE TABLE
9. SQL Constraints
Primary key, foreign key, unique constraints
NOT NULL and CHECK constraints
DEFAULT values
10. Normalization and Denormalization
What is database normalization?
The different normal forms (1NF, 2NF, 3NF, BCNF)
Benefits of normalization
When and why to denormalize data
11. Indexes in SQL
What are indexes and why they are important
Types of indexes: Single-column, composite, unique, full-text
Pros and cons of using indexes
12. Transactions in SQL
What is a transaction?
Transaction commands: COMMIT, ROLLBACK, SAVEPOINT
ACID properties (Atomicity, Consistency, Isolation, Durability)
13. SQL Views
What is a view and how to create it with CREATE VIEW
Advantages and use cases for views
Updating data through views
14. SQL Stored Procedures and Functions
What are stored procedures?
How to create and execute stored procedures
Functions vs. procedures
Use cases for stored procedures
15. Triggers in SQL
What are triggers and how they work
Creating triggers for INSERT, UPDATE, and DELETE
Common use cases for triggers
16. SQL Optimization and Performance Tuning
Understanding query performance
Using EXPLAIN to analyze query plans
Optimizing queries: Using indexes, avoiding subqueries, joins vs. subqueries
Denormalization for performance
17. Advanced SQL Topics
Window functions: ROW_NUMBER(), RANK(), PARTITION BY
Common Table Expressions (CTEs) and recursive queries
Advanced joins: Cross join, Self join, and more
Set operations: UNION, INTERSECT, EXCEPT
18. SQL Security Best Practices
Preventing SQL injection attacks
Role-based access control
Encryption in SQL queries
19. Database Design
ERD (Entity Relationship Diagrams) and database schema design
Relationships: One-to-one, one-to-many, many-to-many
Foreign keys and referential integrity
20. SQL for Data Analysis
Using SQL in data analysis workflows
Aggregating and summarizing data
Creating reports with SQL

Regards
Mohamed Azarudeen

Subjects

  • SQL RDBMS Expert

Experience

  • Senior Software Developer (Sep, 2017–Present) at Deanta Publishing Private limited

Education

  • MCA (Jun, 2011–Jun, 2014) from Manomaniam sundaranar University Tirunelveli

Fee details

    ₹500–1,500/hour (US$5.26–15.79/hour)

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