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Oracle 1z0-888 Exam Dumps Questions and Answers

Exam Code: 1z0-888
Vendor: Oracle
Last Update: May 26, 2024
Questions: 124
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MySQL 5.7 Database Administrator Questions and Answers

Questions 1


Which statement best describes the meaning of the values in the ref columns?



world.City.CountryCode is used as the primary key for the Country table.


No indexed columns are used to select rows from the City table. The world.City.CountryCode column is used to select rows in the Country table.


world.City.CountryCode is used to sort the rows in the City table.


No indexed columns are used to select rows from the Country table. The world.City.CountryCode column is used to select rows in the City table.

Questions 2

Consider the table people with this definition:

The application uses a query such as:

SELECT * FROM people WHERE YEAR(Birthday) = 1980;

The query is not using an index.

Which two methods can be used to allow the query to use an index? (Choose two.)



Change the WHERE clause to Birthday BETWEEN 1980-01-01 AND 1980-12-31.


Add a functional index for YEAR(Birthday).


Execute ANALYZE TABLE to update the index statistics.


Add a generated column calculating YEAR(Birthday) and index that column.


Add FORCE INDEX (Birthday) to the query.

Questions 3

old_alter_table is disabled as shown.

mysql> SELECT @@old_alter_table;

Consider this statement on a RANGE-partitioned table:

mysql> ALTER TABLE orders DROP PARTITION p1, p3;

What is the outcome of executing this statement?



All data in p1 and p3 partitions is removed and the table definition is changed.


All data in p1 and p3 partitions is removed, but the table definition remains unchanged.


Only the first partition (p1) will be dropped because only one partition can be dropped at any time.


It results in a syntax error because you cannot specify more than one partition in the same statement.