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Point out the wrong statement.

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Point out the wrong statement.

(a) Where time-ranges are very wide (e.g., year-long report) and where the data is voluminous, summary tables are a common approach

(b) Coprocessors act like RDBMS triggers

(c) HBase does not currently support ‘constraints’ in traditional (SQL) database parlance

(d) None of the mentioned

I have been asked this question during an internship interview.

My question is from Schema Design in HBase in chapter Hive and HBase of Hadoop

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The correct option is (c) HBase does not currently support ‘constraints’ in traditional (SQL) database parlance

For explanation: The advised usage for Constraints is in enforcing business rules for attributes in the table.

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