What is ref in Firebase?

A Reference represents a specific location in your Database and can be used for reading or writing data to that Database location . You can reference the root or child location in your Database by calling firebase. database(). ref() or firebase.11 Mar 2021

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How do I create a ref in Firebase?

References are lightweight, so you can create as many as you need, and they are also reusable for multiple operations. To create a reference, get an instance of the Storage service using getStorage() then call ref() with the service as an argument . This reference points to the root of your Cloud Storage bucket.

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Is it good to use Firebase database?

Conclusion: If you’re building something cool and needs a fast, reliable database, user authentication and usage tracking, then Firebase is a great way to go . Not recommend for complex project. Large application, very few people use serverless, if you do not want later to pay expensive to sit back.

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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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