Individual skill
databases
Work with MongoDB (document database, BSON documents, aggregation pipelines, Atlas cloud) and PostgreSQL (relational database, SQL queries, psql CLI, pgAdmin). Use when designing database schemas, writing queries and aggregations, optimizing indexes for performance, performing database migrations, configuring replication and sharding, implementing backup and restore strategies, managing database users and permissions, analyzing query performance, or administering production databases.
skills/engineering/databases/SKILL.md
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SKILL.mdcore · 7,669 bytesSKILL.mdcore · 7,669 bytesSKILL.mdcore · 7,669 bytesSKILL.mdcore · 7,669 bytesreferences/mongodb-aggregation.mddoc · 9,333 bytesreferences/mongodb-atlas.mddoc · 9,284 bytesreferences/mongodb-crud.mddoc · 8,355 bytesreferences/mongodb-indexing.mddoc · 10,618 bytesreferences/postgresql-administration.mddoc · 12,113 bytesreferences/postgresql-performance.mddoc · 11,613 bytesreferences/postgresql-psql-cli.mddoc · 10,523 bytesreferences/postgresql-queries.mddoc · 10,091 bytesscripts/db_backup.pyruns · 16,765 bytesscripts/db_migrate.pyruns · 13,773 bytesscripts/db_performance_check.pyruns · 15,550 bytesscripts/requirements.txtdoc · 558 bytesscripts/tests/coverage-db.jsonasset · 47,444 bytesscripts/tests/requirements.txtdoc · 69 bytesscripts/tests/test_db_backup.pyruns · 10,800 bytesscripts/tests/test_db_migrate.pyruns · 9,529 bytesscripts/tests/test_db_performance_check.pyruns · 11,933 bytes
Read excerpt
# 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