I will design sql databases and write complex queries for you

Italy

I speak English, Italian, Chinese

Database and Financial Data Solutions for Businesses

Hi, I'm David! IT & Accounting student. I combine analytical logic with tech to solve business problems and organize data. What I offer: 🇮🇹 PER ITALIANI: Copywriting SEO (finanza/economia), gestion...
About this Gig

I am an Information Technology specialist experienced in database design, EER modeling, and data management. Whether you need a database built from scratch, complex queries written for data extraction, or a Python script to interact with your data, Ive got you covered.

What I can do for you:

  • Database Design & Architecture: Creating clean, optimized database schemas and ER/EER diagrams (up to 7+ tables).
  • SQL Query Writing: Developing complex, high-performance SQL queries (JOINS, Subqueries, Aggregations, Stored Procedures).
  • Query Optimization & Debugging: Analyzing and fixing slow or broken queries to improve system performance.
  • Python Integration: Writing clean scripts for automation, data cleaning, or connecting your database to Python applications.

Databases I work with:

  • MySQL / MariaDB
  • PostgreSQL
  • SQLite / SQL Server

Why choose me?

  • Structured, optimized, and well-commented code.
  • Clear database mapping and documentation.
  • Fast response time and professional communication.

Please message me with your project details and requirements before placing an order so we can discuss the best approach for your system!

Database type:

Graph database

Key-value database

Platform:

MySQL

Expertise:

SQL

DDL

DML

ER diagrams