Does Firebase have a SQL database?

Firebase is a real-time object store. It is not a SQL database and is not intended to be a replacement for one. It completely lacks mechanisms such as JOINs, WHERE query filters, foreign keys, and other tools relational databases all provide. … But any attempt to treat it “like” a SQL replacement is going to fail.

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Can we use MongoDB in Android?

MongoDB has downloads for several operating systems. However, Android is not one of those systems . People use MongoDB as a “web service” for storing data, but it does not have any features to support multi-master replication or your occasionally connected mobile scenario.

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Is MongoDB free to use?

Is MongoDB Free? You can get started with a MongoDB developer sandbox in MongoDB Atlas for free with basic configuration options . No credit cards are required to provision a cluster, and you can use it to explore and learn more about MongoDB Atlas, the database-as-a-service platform from MongoDB.

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