Database Seed Data Generator

Create a seed data generator for:

Database: [PostgreSQL/MySQL/MongoDB]
ORM: [Prisma/TypeORM/Mongoose/etc.]
Schema:
```
[DESCRIBE OR PASTE YOUR SCHEMA]
```

Requirements:
- Data realism: [FAKER DATA/DOMAIN-SPECIFIC]
- Relationship integrity: [MAINTAIN FK RELATIONSHIPS]
- Volume: [NUMBER OF RECORDS NEEDED]
- Reproducibility: [SEEDED RANDOM/DIFFERENT EACH RUN]

Please provide:
1. Seed script structure
2. Factory/fixture patterns
3. Relationship handling
4. Realistic data generation
5. Idempotent seeding
6. Environment-specific seeds