Type this exact prompt into LLMinONE and watch it become a live, interactive developer tools app:
Build a database schema designer: create tables and columns with types, keys and constraints, drag relationships (one-to-one, one-to-many, many-to-many), render an ER diagram with movable tables, and generate SQL DDL for MySQL, PostgreSQL and SQLite. Include a sample e-commerce schema to start from, an export diagram as image button, and a validation panel that warns about missing keys.
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