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Hadoop Interview Questions and Answers

Question - What is the difference between Hadoop and Traditional RDBMS?

Answer -

Criteria

Hadoop

RDBMS

Datatypes

Processes semi-structured and unstructured data.

Processes structured data.

Schema

Schema on Read

Schema on Write

Best Fit for Applications

Data discovery and Massive Storage/Processing of Unstructured data.

Best suited for OLTP and complex ACID transactions.

Speed

Writes are Fast

Reads are Fast

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