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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Creative
PromptBeginner5 minmarkdown
- Use Jakarta Bean Validation annotations (@NotNull
@Size
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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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Creative
PromptBeginner5 minmarkdown
- Validate cross-field dependencies (end date after start date
shipping address matches country)
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Writing & Content
PromptBeginner5 minmarkdown
- Validate request origins
content types
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Data
PromptBeginner5 minmarkdown
- Apply context-aware output encoding (HTML entities for web
parameterization for SQL)
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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
- Implement custom validators for domain-specific data types (SKUs
account numbers
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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
- Never expose stack traces
database errors
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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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Creative
PromptBeginner5 minmarkdown
- **Design error handling** with clear
actionable messages that guide correction without exposing system internals
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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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Creative
PromptBeginner5 minmarkdown
- Documents complex queries
design decisions
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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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Creative
PromptBeginner5 minmarkdown
- Design key naming conventions with colons as separators (e.g.
`user:123:profile`)
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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
- Add new columns as nullable first
backfill data
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