What are the key benefits of Vertica’s columnar store? (Select three.)

A.
Queries are relatively faster as a result.

B.
Columns eliminate the need to compress or encode data.

C.
Queries written for columnar databases are simpler to write than row-based database queries.

D.
More data can be stored in memory.

E.
Query operations in Vertica conserve I/O bandwidth through data compression.

F.
Queries only access the specific data that is needed among rows of data.

Explanation: