1Z0-908 무료 덤프문제 온라인 액세스

Examine this statement, which executes successfully:

Now examine this query:

Which two statements can do this? (Choose two.)

• A.ALTER TABLE employees -
  ADD INDEX ((CAST(birth_date->>'$.month' AS unsigned)));
• B.ALTER TABLE employees -
  ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (MONTH(birth_date)) VIRTUAL NOT NULL, ADD INDEX (birth_month);
• C.ALTER TABLE employees -
  ADD INDEX (birth_date);
• D.ALTER TABLE employees -
  ADD INDEX (birth_date DESC);
• E.ALTER TABLE employees -
  ADD INDEX ((MONTH(birth_date)));
• F.ALTER TABLE employees -
  ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (birth_date->>'$.month') VIRTUAL NOT NULL, ADD INDEX (birth_month);

Examine this command, which executes successfully:

Which two statements are true? (Choose two.)

• A.A single-file backup is created.
• B.The --backup-dir option holds temporary output, status, and metadata files.
• C.The backup operation will finish only when apply-log is executed.
• D.The backup operation will finish only when backup-and-apply-log is executed.
• E.A raw backup is created.

Which two are true about binary logs used in asynchronous replication? (Choose two.)

• A.They contain events that describe all queries run on the master.
• B.They are pulled from the master to the slave.
• C.They contain events that describe only administrative commands run on the master.
• D.They contain events that describe database changes on the master.
• E.They are pushed from the master to the slave.

Which two are contained in the InnoDB system tablespace (ibdata1) by default? (Chose two.)

• A.change buffer
• B.table data
• C.InnoDB Data Dictionary
• D.doublewrite buffer
• E.primary indexes
• F.user privileges

Which three sets of item information are visible in the mysql system database? (Choose three.)

• A.rollback segments
• B.plugins
• C.help topics
• D.time zone information and definitions
• E.audit log events
• F.information about table structures
• G.performance monitoring information