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Oracle MySQL 5.7 Database Administrator 1z0-888 Question # 14 Topic 2 Discussion

Oracle MySQL 5.7 Database Administrator 1z0-888 Question # 14 Topic 2 Discussion

1z0-888 Exam Topic 2 Question 14 Discussion:
Question #: 14
Topic #: 2

After analysis on the slow query log on a high-end OLTP service, the table identified in the slow queries is:

1z0-888 Question 14

What are the two most likely reasons for the slowness given this output? (Choose two.)


A.

Date should be a TIMESTAMP field for better performance.


B.

The User field is too long for most names.


C.

The engine type is not appropriate to the application use.


D.

Using default values for DATETIME causes table scans.


E.

No indexes are defined.


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