Databases
This gives you MongoDB and PostgreSQL coverage in one place, which is honestly pretty practical since most projects end up touching both at some point. It includes the usual CRUD operations, indexing strategies, and aggregation pipelines for Mongo, plus SQL queries, psql commands, and performance tuning for Postgres. The selection guide up front is helpful for choosing between document and relational models. It also throws in Python scripts for migrations, backups, and performance checks. The side-by-side examples make it easy to translate concepts between the two systems when you're context switching.
- skills.sh installs
- 441
- GitHub stars
- 2.2K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add mrgoonie/claudekit-skills --skill databases --agent claude-codeInstalls into .claude/skills of the current project.
Files
Databases Skill
Unified guide for working with MongoDB (document-oriented) and PostgreSQL (relational) databases. Choose the right database for your use case and master both systems.
When to Use This Skill
Use when:
- Designing database schemas and data models
- Writing queries (SQL or MongoDB query language)
- Building aggregation pipelines or complex joins
- Optimizing indexes and query performance
- Implementing database migrations
- Setting up replication, sharding, or clustering
- Configuring backups and disaster recovery
- Managing database users and permissions
- Analyzing slow queries and performance issues
- Administering production database deployments
Database Selection Guide
Choose MongoDB When:
- Schema flexibility: frequent structure changes, heterogeneous data
- Document-centric: natural JSON/BSON data model
- Horizontal scaling: need to shard across multiple servers
- High write throughput: IoT, logging, real-time analytics
- Nested/hierarchical data: embedded documents preferred
- Rapid prototyping: schema evolution without migrations
Best for: Content management, catalogs, IoT time series, real-time analytics, mobile apps, user profiles
Sponsors
Agent CaffeineSponsoredClose your lid, come back to finished work
SnugSponsoredThe clipboard manager for the AI eraPromote your product hereReach 125k+ visitors monthly
WaxSponsoredBlock anything with supervision, without erasing your iPhonePromote your product hereReach 125k+ visitors monthly
knobsSponsoredSee your site on any phone, any day, in any languageDetails
- Repository
- github.com/mrgoonie/claudekit-skills
- Categories
- Backend & APIs, Documentation, Debugging, Cloud & Infrastructure, CLI & Terminal, Databases
- First seen
- Jun 3, 2026
More from mrgoonie/claudekit-skills
All 28- Frontend Design424
- Docs Seeker408
- Repomix406
- Better Auth396
- Frontend Dev Guidelines377
- Web Frameworks377
- Mcp Management373
- Mermaidjs V11370
- Skill Creator360
- Payment Integration356
- Mcp Builder315
- Template Skill294
- Backend Development2.3K
- Sequential Thinking1.8K
- Threejs1.3K
- Devops995
- Chrome Devtools745
- Aesthetic722
- Ui Styling645
- Problem Solving582
- Debugging575
- Media Processing568
- Ai Multimodal539
- Code Review520
Recommended
More Backend & APIs
clerk-nextjs-skillsgocallum/nextjs16-agent-skillsClerk authentication for Next.js 16 (App Router only) with proxy.ts setup, migration from middleware.ts, environment configuration, and MCP server integration.438skills.sh installs
wordpress-plugin-fundamentalsbobmatnyc/claude-mpm-skillsModern WordPress plugin development with PHP 8.3+, OOP architecture, hooks system, database interactions, and Settings API434skills.sh installs
depot-generaldepot/skillsHandles Depot CLI installation, authentication, login, project setup, organization management, and API access. Use when installing the Depot CLI, logging in wit429skills.sh installs
tigeropentigerfintech/tigeropen-skillTiger Brokers OpenAPI Python SDK — complete skills for AI coding tools. Covers SDK setup, market data queries, stock/futures/options trading, real-time push sub429skills.sh installs
session-managementsecondsky/claude-skillsImplements secure session management with JWT tokens, Redis storage, refresh flows, and proper cookie configuration. Use when building authentication systems, m427skills.sh installsoauth-implementationsecondsky/claude-skillsOAuth 2.0 and OpenID Connect authentication with secure flows. Use for third-party integrations, SSO systems, token-based API access, or encountering authorizat422skills.sh installs