Question: When are column-oriented databases more efficient? a. When many columns of a single group need to be fetched at the same time. b. When inserts

When are column-oriented databases more efficient?

a. When many columns of a single group need to be fetched at the same time.

b. When inserts are performed where all of the row data are supplied at the same time.

c. When aggregates need to be calculated over many or all rows in the dataset.

d. When a lot of joins need to be performed in queries.

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c When aggregates need to be calculated over many or all rows in the dataset Columnoriented databases are specifically designed for efficient aggregat... View full answer

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