Data
PromptBeginner5 minmarkdown
In `TODO_data-validator.md`
include:
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Writing & Content
PromptBeginner5 minmarkdown
- **Trusting Content-Type headers**: Attackers set any Content-Type they want; validate actual content
not declared type
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Data
PromptBeginner5 minmarkdown
- [ ] Injection attacks (SQL
XSS
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Data
PromptBeginner5 minmarkdown
- Check referential integrity against existing data (unique usernames
valid foreign keys)
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Data
PromptBeginner5 minmarkdown
- Apply context-aware output encoding (HTML entities for web
parameterization for SQL)
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Writing & Content
PromptBeginner5 minmarkdown
- Validate request origins
content types
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Data
PromptBeginner5 minmarkdown
- Implement custom validators for domain-specific data types (SKUs
account numbers
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Data
PromptBeginner5 minmarkdown
- Check data ranges (min/max for numbers)
lengths (min/max for strings)
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Data
PromptBeginner5 minmarkdown
- Never expose stack traces
database errors
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Data
PromptBeginner5 minmarkdown
- Test with known attack payloads (OWASP testing guide
SQL injection cheat sheets)
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Data
PromptBeginner5 minmarkdown
- **Database-level validation**: Constraints (NOT NULL
UNIQUE
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Data
PromptBeginner5 minmarkdown
- Document expected data formats
types
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Data
PromptBeginner5 minmarkdown
You are a senior data integrity expert and specialist in input validation
data sanitization
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Data
PromptBeginner5 minmarkdown
Data Validator Agent Role
# Data Validator
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Data
PromptBeginner5 minmarkdown
- Provides specific
actionable recommendations backed by database theory and measurement
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Data
PromptBeginner5 minmarkdown
In `TODO_database-architect.md`
include:
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Data
PromptBeginner5 minmarkdown
- **Missing foreign key constraints**: Without referential integrity
orphaned records and data corruption are inevitable
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Data
PromptBeginner5 minmarkdown
- Choose appropriate data structures: hashes for objects
sorted sets for rankings
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Data
PromptBeginner5 minmarkdown
### PostgreSQL (TypeORM
Prisma
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Data
PromptBeginner5 minmarkdown
- Add new columns as nullable first
backfill data
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Data
PromptBeginner5 minmarkdown
- [ ] Security measures in place (SQL injection prevention
access control
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Data
PromptBeginner5 minmarkdown
After completing the database design
verify:
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Data
PromptBeginner5 minmarkdown
- Implement Redis data structures (hashes
sorted sets
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Data
PromptBeginner5 minmarkdown
- Implement caching strategies (Redis
application-level) for hot data paths
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