Hands-on SQL portfolio of 105 real-world problems showcasing analytical precision, performance tuning, and query mastery.

A solid grasp of SQL, including joins, subqueries, window functions, CTE's, and data aggregation. Skilled at solving complex problems with a focus on query optimization and advanced techniques.

vet-clinic-database is a postgreSQL database project that stores details of animals in a veterinary clinic and also generates specific reports using SQL queries.

Solutions for the DBMS Project: Ship Positions Analysis, featuring PostgreSQL queries, performance optimization (indexing, partitioning), and memory management for analyzing real-world ship and vessel data from the Piraeus area.

A fully normalized Hotel Booking System Database designed using PostgreSQL, following 3rd Normal Form (3NF) principles. This project demonstrates real-world database design, indexing, stored procedures, and query optimization.