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Visual Database Modeling Made Professional

Design, document, and export your database models with an intuitive visual interface. Support for relational and analytical databases. NoSQL support coming soon!

5+
Export Formats
3
Database Types
30+
Years Experience
Main modeling canvas

Powerful Features

Everything you need for professional database modeling

Visual Modeling

Intuitive drag-and-drop interface for creating tables, relationships, and complex database structures.

Visual modeling interface

Multiple Database Types

Support for Relational (SQL) and Analytical databases (Data Warehouses). NoSQL support coming soon!

Different database types

Export to Multiple Formats

Export your models to XMI, SQL DDL, OWL/Protégé, JSON, and Data Dictionary formats.

Export formats modal

Business Rules Documentation

Document business rules, constraints, and field descriptions directly in your model.

Business rules editor

Auto-Layout Algorithms

Automatically organize your models with hierarchical, force-directed, and circular layouts.

Layout algorithms

Library Domains

Create reusable and shareable domains across your models. Define common entities like Customer, Product, Order, and Order Item once, then reuse them across multiple projects.

Domain library manager

Version Control

Track changes, create versions, and restore previous states of your database models.

Version history

Entity Import

Import entities directly into your model from SQL, XMI, and JSON files. Jumpstart your design by reusing existing schemas and structures without manual re-entry.

Entity import modal

Naming Convention

Define and enforce naming conventions across your entire model. Keep entities, attributes, and relationships consistent with your organization's standards automatically.

Naming convention settings

Model Quality

Automatically analyse your model and get a quality score with actionable insights. Detect missing descriptions, inconsistent naming, undocumented fields, and other issues before they become problems.

Model quality analysis

Version Comparison

Compare any saved version against the current model. Instantly see which entities, attributes, relationships, and indexes were added, removed, or modified.

Version comparison diff
About Us

One Man Army Co.

A Brazilian company founded by a Data Engineer with over 30 years of professional experience in database technologies.

Our expertise spans across commercial and open-source database systems, including relational databases (Oracle, SQL Server, PostgreSQL, MySQL), NoSQL solutions (MongoDB, Cassandra), and analytical platforms (Data Warehouses and Big Data).

SchemaGraphos was born from decades of hands-on experience in data modeling, combining industry best practices with modern technology to deliver a professional tool for database designers and architects.

30+ years in database engineering
Commercial & open-source expertise
Made in Brazil 🇧🇷
One Man Army Co. Logo

Simple, Transparent Pricing

Pay only for the days you use. No hidden fees, no surprises.

1 Week

US$ 2

7 days of continuous access

  • Full platform access
  • All export formats
  • Email support
  • Renew anytime
Get Started

1 Month

US$ 5

30 days of continuous access

  • Full platform access
  • All export formats
  • Email support
  • Renew anytime
Get Started

6 Months

US$ 20

180 days of continuous access

Save 33%
  • Full platform access
  • All export formats
  • Priority email support
  • Renew anytime
Get Started

1 Year

US$ 35

365 days of continuous access

Save 42%
  • Full platform access
  • All export formats
  • Priority email support
  • Renew anytime
Get Started

Flexible Renewal

Renew your license at any time. If renewed within 30 days after expiration, all your data remains intact.

Important: If your license expires and is not renewed within 30 days, all your data will be permanently deleted.

Ready to start modeling?

Get your license today and start creating professional database models.

Get in Touch

Have questions or need support? We're here to help.

Support

Technical support and license assistance

schemagraphos-support@googlegroups.com

Questions & Feedback

General inquiries and feedback

one-man-army-co@googlegroups.com

Privacy Policy

Your data, your rights — transparent and compliant with the LGPD.

Introduction

One Man Army Co. values your privacy. This policy explains how we collect, use, and protect your personal data in accordance with Brazilian Law No. 13,709/2018 (LGPD) and applicable international data protection standards.

Data We Collect

We collect data you voluntarily provide during registration (name, e-mail, domain) and browsing data (IP address, session cookies) used solely to improve your experience, ensure platform security, and diagnose errors.

Purpose of Processing

  • Provide the contracted services
  • Fulfil legal and regulatory obligations
  • Analyse and fix platform errors
  • Communicate essential service updates

Data Sharing

We never sell your data. We may share it only with essential service partners (hosting, identity management) strictly necessary to operate the platform. We do not send marketing communications — all necessary communication is made through the application itself.

Your Rights (LGPD)

You may request access, correction, anonymisation, or deletion of your data, as well as revoke previously given consents at any time. To exercise your rights, contact us at:

schemagraphos-support@googlegroups.com

Security

We adopt appropriate technical and administrative measures to protect personal data from unauthorised access and accidental or unlawful situations, including encryption in transit, access controls, and regular security reviews.