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mongodb-schema-design

Skill

MongoDB schema design patterns and anti-patterns. Use when designing data models, reviewing schemas, migrating from SQL, or troubleshooting performance issues caused by schema problems. Triggers on "design schema", "embed vs reference", "MongoDB data model", "schema review", "unbounded arrays", "one

0Databases

Install

git clone https://github.com/mongodb/agent-skills.git ~/.claude/skills/mongodb-schema-design

What is mongodb-schema-design?

MongoDB schema design patterns and anti-patterns. Use when designing data models, reviewing schemas, migrating from SQL, or troubleshooting performance issues caused by schema problems. Triggers on "design schema", "embed vs reference", "MongoDB data model", "schema review", "unbounded arrays", "one-to-many", "tree structure", "16MB limit", "schema validation", "JSON Schema", "time series", "schema migration", "polymorphic", "TTL", "data lifecycle", "archive", "index explosion", "unnecessary indexes", "approximation pattern", "document versioning".

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~139 tokens of context used while enabled, before you invoke anything

Documentation

README · ~8 min read

MongoDB Schema Design

Data modeling patterns and anti-patterns for MongoDB, maintained by MongoDB. Bad schema is the root cause of most MongoDB performance and cost issues—queries and indexes cannot fix a fundamentally wrong model.

When to Apply

Reference these guidelines when:

  • Designing a new MongoDB schema from scratch
  • Migrating from SQL/relational databases to MongoDB
  • Reviewing existing data models for performance issues
  • Troubleshooting slow queries or growing document sizes
  • Deciding between embedding and referencing
  • Modeling relationships (one-to-one, one-to-many, many-to-many)

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