Visually model relational tables, primary & foreign keys, and export to SQL DDL, Prisma, or Mermaid ERD.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Add database tables and configure column names, data types, and primary key flags.
Link foreign key columns to target tables to model 1:1 and 1:N relational references.
Download or copy production SQL DDL, Prisma Schema, Drizzle ORM TypeScript, or Mermaid ER diagrams.
Yes! Switch to the Schema Code Generator tab to copy one-click schemas for Prisma, Drizzle ORM, raw PostgreSQL/MySQL DDL, and Mermaid diagrams.
No. All database modeling, diagram rendering, and schema compilation operate 100% locally in your browser with zero network egress.
Yes, it supports UUID, VARCHAR, INTEGER, BIGINT, BOOLEAN, TIMESTAMP, TEXT, and FLOAT types with nullable and unique constraint flags.
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