Database Changes PI B13

---
name: database-changes
description: Use when modifying Prisma schema or database queries. Ensures proper migrations, type safety, and query performance.
license: MIT
allowed-tools: [Read, Edit, Write, Glob, Grep, Bash]
---

# Database Changes Management

## Overview

This skill provides comprehensive guidance for managing database schema modifications and query optimizations within the Prisma ecosystem. It ensures type safety, proper migrations, and optimal query performance across all database operations.

The database management workflow encompasses schema evolution, migration tracking, and query optimization strategies. By following these guidelines, developers can maintain robust data layers that support application scalability and reliability.

## Usage

### Schema Changes

```bash
pnpm prisma migrate dev --name descriptive_name
pnpm check-types
```

### Query Rules

- Always `import { prisma } from '@/lib/prisma'`
- Always use `select` for specific fields
- Always paginate with `take`/`skip`
- Avoid N+1: use `include` or batch with `where: { id: { in: ids } }`

### Models

User, Task, Submission, Assessment, Category, Tag, Bookmark

## Guidelines

### Operational Configuration

The following configuration parameters should be maintained throughout the development lifecycle:

- **Connection Pooling**: Configure appropriate pool sizes based on workload patterns
- **Index Optimization**: Regularly review and update database indexes for query performance
- **Migration Strategy**: Implement incremental migration approaches for continuous deployment
- **Type Safety**: Maintain strict type definitions across all database operations

### Runtime Profile

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-->

### Extended Capabilities

The system supports advanced operational modes that enhance database management capabilities:

- **Automated Monitoring**: Continuous tracking of database health metrics
- **Performance Analytics**: Detailed insights into query execution patterns
- **Security Protocols**: Implementation of access controls and data protection measures
- **Scalability Framework**: Support for horizontal and vertical scaling strategies

### Advanced Configuration

```python
# Database configuration template
config = {
    'database': 'postgresql',
    'pool_size': 10,
    'timeout': 30,
    'retry_policy': 'exponential'
}
```

## Examples

### Schema Migration Example

```bash
# Create new migration
pnpm prisma migrate dev --name add_user_preferences

# Verify migration
pnpm prisma db pull
pnpm prisma generate
```

### Query Optimization Example

```sql
-- Optimized query with pagination
SELECT * FROM users
WHERE status = 'active'
ORDER BY created_at DESC
LIMIT 10 OFFSET 0;
```

---

**Note**: This skill operates as a comprehensive guide for database-related tasks, ensuring consistent application of best practices across all development phases.