firebase-firestore-basicslisted

# Firestore Basics Complete guide for Cloud Firestore — provisioning, securing, querying, and optimizing. ## Edition Awareness (Check First) Before writing ANY Firestore code, determine the edition: - **Standard**: Classic rules + limits. Most projects use this. - **Enterprise (Pipeline)**: 100+ features — groupBy, min/max, countDistinct, optional indexes, `query.explain()`. Available since Jan 2026. Agent MUST NOT suggest Pipeline syntax for Standard projects — it will error. ## Provisioning Set up Cloud Firestore in your Firebase project and local environment: [provisioning.md](references/provisioning.md) ## Security Rules Write and deploy Firestore Security Rules to protect your data: [security_rules.md](references/security_rules.md) ## SDK Usage CRUD operations, real-time listeners, queries, aggregation, pagination: [web_sdk_usage.md](references/web_sdk_usage.md) ## Query Mechanics (Deep Dive) **How Firestore processes queries internally** — execution model, index selection, cost model, aggregation mechanics, and the agent pre-query checklist: [query_mechanics.md](references/query_mechanics.md) ## Indexes Index types, composite index ordering rules, Enterprise differences, and management: [indexes.md](references/indexes.md) ## Agent Pre-Query Checklist Before generating ANY Firestore query: 1. **Edition?** → Standard or Enterprise? Determines available syntax. 2. **Aggregation?** → `getAggregateFromServer` (Standard) or `db.pipeline().aggregate()` (Enterp