How does Google Cloud Firestore store data and what is the Collection-Document model?

Explanation & Concept

Cloud Firestore is a flexible, scalable NoSQL cloud database for client and server development. Data is stored in **Documents**, which are grouped into **Collections**.

Documents contain key-value pairs and can contain nested subcollections, forming hierarchical data structures that scale horizontally with high read/write performance.

Code Example

javascript

import { getFirestore, doc, setDoc, getDoc } from "firebase/firestore";

const db = getFirestore();

// Create or update a document in the "cities" collection
await setDoc(doc(db, "cities", "SF"), {
  name: "San Francisco",
  state: "CA",
  country: "USA",
  population: 870000
});

// Retrieve document
const docSnap = await getDoc(doc(db, "cities", "SF"));
if (docSnap.exists()) {
  console.log("City data:", docSnap.data());
}

How It Works & Key Takeaways

Firestore documents are schemaless JSON-like structures that support primitive datatypes, arrays, maps, and GeoPoints.

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javascript

How does Google Cloud Firestore store data and what is the Collection-Document model?

Explanation & Concept

Cloud Firestore is a flexible, scalable NoSQL cloud database for client and server development. Data is stored in **Documents**, which are grouped into **Collections**.

Documents contain key-value pairs and can contain nested subcollections, forming hierarchical data structures that scale horizontally with high read/write performance.

Code Example

javascript

import { getFirestore, doc, setDoc, getDoc } from "firebase/firestore";

const db = getFirestore();

// Create or update a document in the "cities" collection
await setDoc(doc(db, "cities", "SF"), {
  name: "San Francisco",
  state: "CA",
  country: "USA",
  population: 870000
});

// Retrieve document
const docSnap = await getDoc(doc(db, "cities", "SF"));
if (docSnap.exists()) {
  console.log("City data:", docSnap.data());
}

How It Works & Key Takeaways

Firestore documents are schemaless JSON-like structures that support primitive datatypes, arrays, maps, and GeoPoints.

Mock Test · 1 Questions · Optional

Ready for Authentication?

Take a quick test to evaluate yourself, or move straight to the next module.

Beginner1 questions

Skip