Answer / Ram Nath Raman

Although MongoDB has Hadoop connectors, it is not a distributed file system like Hadoop Distributed File System (HDFS). MongoDB uses its own data distribution mechanism.

Is mongodb a json?

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If you remove an object attribute, is it deleted from the database?

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How do I do transactions/locking in mongodb?

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Is mongodb relational?

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What is the command syntax that tells you whether you are on the master server or not? And how many master does mongodb allow?

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What language does mongodb use?

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What is a storage engine in mongodb?

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Does mongodb have a schema?

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Is it true that mongodb uses bson to represent document structure?

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Why is mongodb so fast?

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Is mongodb a relational database?

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How to create primary/foreign key relationships in mongodb?

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