Need a professional database designer or SQL expert to build, optimize, or fix your database system?

I will design efficient relational databases, create ER diagrams (ERD), and write optimized SQL queries for PostgreSQL, MySQL, Oracle, and other relational database systems. I also specialize in PL/SQL development for Oracle databases.

Whether it’s academic projects, business systems, or enterprise database design, I will ensure performance, scalability, and data integrity.

Services I Offer:

✔ Database design and architecture

✔ ERD (Entity Relationship Diagram) creation

✔ Normalization (1NF, 2NF, 3NF, BCNF)

✔ SQL query writing and optimization

✔ Stored procedures and functions

✔ Triggers and views

✔ Indexing and performance tuning

✔ Data modeling

✔ Database debugging and fixes

✔ Migration between databases

✔ Report and schema documentation

Databases & Technologies:

PostgreSQL

MySQL

Oracle Database

Microsoft SQL Server

SQLite

PL/SQL (Oracle)

SQL (Advanced)

DBMS Concepts

SQL Skills Include:

SELECT, JOINs, Subqueries

Complex queries and aggregations

Window functions

Stored procedures

Functions and packages (Oracle PL/SQL)

Triggers

Transactions and locking

Performance optimization

Use Cases:

Academic DBMS projects

Business application databases

E-commerce database design

Inventory management systems

Banking and finance databases

HR and payroll systems

Reporting systems

What You Will Receive:

✅ ERD diagrams (PDF/Image)

✅ SQL scripts and schema files

✅ Database design documentation

✅ Optimized queries

✅ Sample data (if required)

✅ Step-by-step explanation

✅ Technical support

Packages

Basic – SQL Query Help

$40

Simple database design or query writing

Up to 5 tables

Basic ERD

Standard SQL queries

2-day delivery

Standard – Database Design & Development

$120

Complete database design

ERD with normalization

Complex SQL queries

Stored procedures/views

PostgreSQL or MySQL implementation

4-day delivery

Premium – Advanced Database Solution

$300

Enterprise-level database design

Fully normalized schema

Oracle PL/SQL or PostgreSQL advanced features

Indexing and optimization

Triggers, procedures, and functions

Performance tuning

Full documentation

7-day delivery

Gig Extras

Express Delivery

24-hour delivery — $30

Additional Tables Design

$20 per 5 tables

Oracle PL/SQL Development

$80

Database Optimization

$50

ERD Diagram (Advanced)

$25

Data Migration Support

$75

Query Optimization

$40

Technical Documentation

$25