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Question

In the context of database cracking, what does the system do with the base column after the first query on a column?

a.

It deletes the base column.

b.

It copies the base column to an auxiliary column.

c.

It creates a new table for the base column.

d.

It compresses the base column.

Posted under Big Data Computing

Answer: (b).It copies the base column to an auxiliary column. Explanation:In the context of database cracking, after the first query on a column, the system copies the base column to an auxiliary column where all cracking happens.

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Q. In the context of database cracking, what does the system do with the base column after the first query on a column?

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