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I will design relational database erd and sql server schema
Data Analyst
Welcome! I'm Hager, a passionate Data Analyst & Database Designer driven by the power of data.
I help businesses and decision-makers unlock the real value hidden in their numbers. By combining robust ...
About this Gig
Looking for a reliable, error-free relational database built from scratch? You are in the right place.
Whether you are launching a clinic, e-commerce store, booking system, or any custom business, I will turn your workflow into a clean, scalable database using Microsoft SQL Server.
My focus is accuracy, simplicity, and total clarityensuring you receive a production-ready system that you fully understand and can run effortlessly on your machine.
️ What You Will Receive:
- Conceptual ERD: Clear visual diagram (Editable Draw.io + PDF).
- Logical Schema: Normalized structure (3NF) that eliminates duplicate data and conflicts.
- Production SQL Script (.sql): 1-click execution script with tables, keys, and validation constraints.
- Clear Documentation (PDF): Easy-to-read guide explaining your database structure.
Why Choose This Service?
- 100% Custom Architecture: Tailored to your exact business rules with zero errors.
- Easy Execution & Scalability: A commented script ready to run, adapt, and scale as your project grows.
- Unlimited Revisions (Premium): Total peace of mind until you are 100% satisfied.
Send me a message with your project idea, and let's build your database foundation!
Platform:
MS SQL
•
SQL Server
Expertise:
Data structure
•
Design
•
ERD
•
Normalization
FAQ
What information do you need from me to get started?
Simply share your business idea, project requirements, workflow steps, or wireframes (if available). Even if you only have a rough concept, I will help you extract the entities, define business rules, and structure everything logically.
Which database management system (DBMS) do you specialize in?
I specialize strictly in Microsoft SQL Server (T-SQL). This focus ensures you receive optimized schemas utilizing native SQL Server constraints, indexing techniques, and referential integrity rules.
In what formats will I receive the diagrams?
You will receive the original, fully editable source files in Draw.io (.drawio) format along with clean, high-resolution PDF documents that are ready to share with stakeholders or developers.
Do I need technical experience to execute the delivered SQL script?
Not at all! I provide a self-contained, modular, and fully commented .sql script. You can execute it with a single click inside SQL Server Management Studio (SSMS) to automatically create the database, tables, keys, and validation rules.
How do you ensure the database won't contain duplicate data or errors?
I adhere strictly to the Third Normal Form (3NF) during the logical mapping phase. Additionally, I implement database-level constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, and CHECK) to prevent double-booking, orphaned records, and invalid data entry automatically.
What happens if I need to add more tables or modify my requirements later?
The database architecture is built to be modular and scalable from day one, allowing you or your team to expand easily. Furthermore, the Premium package includes unlimited revisions to ensure your system evolves seamlessly until you are 100% satisfied.
Can you deliver test data (sample records) to verify the schema?
Yes! While the standard packages focus purely on clean architecture and DDL scripts, sample data insertion scripts and analytical reporting queries (JOINs) can easily be provided upon request or as an add-on.
