JDElite Data Modeler: Your Best Companion for Database Schema Design, Visualization and Re-engineering

Are you looking to fast-track your database SQL schema project? JDElite Data Modeler gives software architects, developers, and agile teams a smarter way to build, visualize, and optimize SQL architectures instantly:
  • fine-tuning AI-generated SQL schemas, or reverse engineering SQL schemas
  • Multi-Engine Support: Works natively with PostgreSQL, SQL Server, Oracle, MySQL, MariaDB, IBM DB2, and SQLite
  • Zero Visual Clutter: Powered by patented orthogonal edge routing for clean, readable ERDs
  • Instant Sync: Two-way synchronization between visual diagrams and SQL constraints, using the proprietary unified JSON internal model
Try for free the Playground Access. No account required to get started. Safely download Desktop File Browser to get full access to your file system.
Patented connections layout, no visual clutter
For visual modeling, JDElite Data Modeler uses the proprietary orthogonal connections layout: patent No. US 10,424,096 - JDElite Consulting: Jordan Raykov, Sep. 24, 2019: Technique for Orthogonal Edge Routing of Directed Graph Diagrams with Edge Crossings Reduction.
JDElite ERD Modeling — How It Works: - design visually, parse existing SQL, generate SQL from your ERD
  • Visual ERD Modeling — JDElite Data Modeler represents database tables as diagram nodes and visualizes columns, primary and foreign keys, indexes, LOBs, constraints, and relationships.
  • Bidirectional SQL ↔ ERD Workflow — Import an existing SQL schema and automatically build its ERD. Modify the model visually, or create a new ERD from scratch using mouse drag-and-drop, then export the model back to SQL.
  • Seven Native Database Engines — Supports SQL Server, Oracle, MySQL, MariaDB, PostgreSQL, IBM DB2, and SQLite through a unified database model.
  • Unified Internal Model — All supported database engines are represented through a common JSON-based schema model, providing a consistent foundation for visualization, editing, parsing, and SQL generation.
  • Schema-Aware Editing — Keys, indexes, constraints, and relationships are represented explicitly and validated during ERD design, helping maintain database integrity as the model evolves.
JDElite Data Modeler — Based on Relational Database and ERD Standards
  • ERD Structure and Relationship Modeling – database schema tables are represented as diagram nodes, with columns shown as node rows, corresponding to table columns.
  • Interactive Relationship Creation – dragging a primary key handle highlights all compatible foreign-key foreign key targets, ensuring accurate database constraints.
  • Bidirectional Relationship Synchronization - two-way synchronization between a graphical link and a constraint: creating a link by dragging the mouse will also automatically create the corresponding foreign key constraint. Vice versa, defining a foreign key constraint in the table editor generates the corresponding graphical link.
How to Run
JDElite Data Modeler’s Playground mode gives you access to most features, allowing you to create and edit diagrams, as well to open and edit different built-in templates within the secure browser sandbox. However, in order to get access to the Windows file system to import, export and save your projects, you need to install the Desktop File Browser module that uses node.js.
  • For new designs, either start from scratch, or select an ERD template from the provided set of solutions, based on various industry domains, like:
  • Company Management
  • Manufacturing/Warehouse Management
  • Enterprise Resource Planning
A Smarter Way to Design Flowcharts
Whether you're managing database schemas or visualizing processes, JDElite Data Modeler makes it easy. Create flowcharts, from simple to large and complex, by drag-and-drop and inline editing. The advanced layout algorithms reduce visual clutter, ensuring your diagrams are as clear and scalable as your ideas.