What is a Subcollection in Firebase?

A subcollection is a collection associated with a specific document . Note: You can query across subcollections with the same collection ID by using Collection Group Queries. You can create a subcollection called messages for every room document in your rooms collection: collections_bookmark rooms.11 Kas 2021

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What is Firebase in layman’s terms?

Firebase is a Backend-as-a-Service (Baas) . It provides developers with a variety of tools and services to help them develop quality apps, grow their user base, and earn profit. It is built on Google’s infrastructure. Firebase is categorized as a NoSQL database program, which stores data in JSON-like documents.

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What is the structure of Firebase?

All Firebase Realtime Database data is stored as JSON objects . You can think of the database as a cloud-hosted JSON tree. Unlike a SQL database, there are no tables or records. When you add data to the JSON tree, it becomes a node in the existing JSON structure with an associated key.

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How is data stored in Firebase?

Firebase Realtime Database is a NoSQL cloud database that is used to store and sync the data. The data from the database can be synced at a time across all the clients such as android, web as well as IOS. The data in the database is stored in the JSON format and it updates in real-time with every connected client.

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Is Firebase good for queries?

To implement functionalities like recent search history, recently viewed items, firebase would be the best option. This is possible since firebase is just a bucket of data that can be easily allocated for each user. Queries with limited sorting and filtering functionality can be performed with the firebase database .

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