The simplest way for deleting data is to call removeValue() on a reference to the location of that data. We can also delete data by specifying null as the value for another write operation such as setValue() or updateChildren().
Read moreHow do I remove a child from Firebase?
If you want to remove the entire child, then just use: ref. child(“mockChild”). removeValue(); 27 Eyl 2017
Read moreWhich of the following is best practices for Firebase?
Explanation: Both A and B is best practices for firebase. 9. limitToFirst method returns the specified number of items beginning from the first one. Explanation: True, limitToFirst method returns the specified number of items beginning from the first one.
Read moreHow do I optimize my Firebase realtime database?
There are a few different ways to improve Firebase Realtime Database performance in your app.
Read moreIs MongoDB faster than Firebase?
Firebase and MongoDB are both designed to perform well at scale, but given MongoDB’s configurability and the range of Atlas performance tiers, it’s hard not to say that MongoDB comes out on top when it comes to pure performance .
Read moreIs 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 .
Read moreCan we use SQL queries in Firebase?
FireSQL is a library built on top of the official Firebase SDK that allows you to query Cloud Firestore using SQL syntax. It’s smart enough to issue the minimum amount of queries necessary to the Firestore servers in order to get the data that you request.
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