I will design your database schema erd and sql queries

Manuel Davoli

Venezuela

I speak English, Spanish

Data Systems and Workflow Automation Specialist

I build reliable data systems and workflow automations that replace manual work and make operations easier to manage. Using Tally, Google Sheets, Apps Script, SQL, and Power BI, I create smart forms, ...
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About this Gig

I will design or improve your relational database schema, create a professional ERD and write the SQL queries your project needs.


I can deliver:

- Entity relationship diagrams with cardinalities

- Tables, attributes, primary and foreign keys

- Normalization and relationship review

- SQL DDL creation scripts

- Joins, subqueries, aggregations and views

- Query debugging and optimization

- Clear assumptions and documentation


My experience includes designing a complex data model with more than 80 entities for sales, inventory and operational processes. I focus on data integrity, readable naming and a structure that can grow without becoming difficult to maintain.


You will receive editable source files when supported, exported diagrams and tested SQL. Please contact me before ordering if your database is large, requires migration, uses restricted production access or needs more tables and queries than the selected package includes.A strong database starts with a clear structure.

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design your database schema erd and sql queries
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Database type:

Relational database

Platform:

MySQL

Expertise:

SQL

•

ER diagrams

•

Normalization

•

Query optimization

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