The Following Query Returns a Single Number as a Total

question 23

Multiple Choice

The following query returns a single number as a total (or sum) of all blocks,used by all datafiles in the database: ____.

• A) SELECT TOTAL(BLOCKS)FROM DBA_DATA_FILES;
• B) SELECT SUM(BLOCKS)FROM DBA_DATA_FILES;
• C) SELECT AVG(BLOCKS)FROM DBA_DATA_FILES;
• D) SELECT COUNT(BLOCKS)FROM DBA_DATA_FILES;

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Definitions:

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