I will design mysql database schema, erd and optimize sql queries for your PHP apps

I primarily work with MySQL and MariaDB, which are the most common databases for PHP and CodeIgniter web applications. I also work with PostgreSQL and SQL Server. Whether you need a simple 3-table schema or a complex multi-module database with 50+ tables, relationships, and optimized indexes.

Depending on the package you choose, the service includes: MySQL schema design, ERD (Entity Relationship Diagram), table structure with proper data types, primary and foreign keys, relationships, normalization, index setup for performance, and documentation of the database structure.

Yes — this is one of the most common things I do. If your existing database has slow queries, missing indexes, poor table structure, or scalability issues, I can audit it and fix the problems without disrupting your live application. I will identify the bottlenecks, optimize the queries.

Absolutely. PHP and CodeIgniter are my primary stack. I design databases that integrate cleanly with CodeIgniter's Active Record and Query Builder, follow MVC structure, and are built to work efficiently with your existing models and controllers. I can also review your current database queries.

Yes. Every database design includes a clean ERD (Entity Relationship Diagram) that visually shows your tables, columns, data types, primary keys, foreign keys, and relationships. This makes it easy for you or your team to understand and maintain the database long-term.

I handle data migration, import, and export using SQL scripts, CSV files, and PHP scripts depending on your setup. Whether you need to move data from one database to another, import bulk records from Excel or CSV, or export structured data for reporting — I do it safely with validation.

Database merging is something I've done many times. I'll start by mapping the structure of both databases, identifying conflicts, duplicate columns, and relationship mismatches, then build a migration plan to safely combine them into one clean unified database.

Delivery time depends on the complexity of your database. Simple query fixes or small schema designs are typically done within 1–2 days. Medium projects with ERD and full design take 3–4 days. Large-scale architecture with 20+ tables, normalization, and optimization takes up to 7 days.

Yes. I deliver every project with clear documentation — the ERD diagram, a description of each table and its purpose, column data types and constraints, and relationship explanations. If I optimize your queries, I also include before/after comparisons so you can see exactly what improved.

Yes. I provide post-delivery support for any questions or minor adjustments related to the delivered work. If something isn't working as expected after delivery, message me and I will fix it promptly. For ongoing support, larger changes, or new features, we can discuss a separate order