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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. How does MySQL HeatWave improve query performance?
Response:

A) By automatically creating indexes on frequently used columns.
B) By replicating data across multiple servers.
C) By caching the entire database in memory.
D) By offloading analytics queries to an in-memory, highly parallel processing engine.

2. You are using the innoDB engine and the innodb_f ile_per_table option is set.
You delete a significant number of rows of a large table named inventory and issue the command optimize table inventory.
What will happen to the inventory table?

A) The table will be checked for errors and repaired.
B) The table storage space will be reduced.
C) The table statistics will be stored.
D) The table will be optimized and replicated.

3. Which Oracle product is certified to work with MySQL Enterprise Edition?

A) Oracle Enterprise Manager
B) Oracle Application Express
C) Oracle Data Pump
D) Oracle Enterprise Backup

4. Which three options are valid reasons for using a primary key in a table?

A) automatic storage of data in a sorted order
B) increasing performance when using select statements
C) preventing duplicate keys
D) exporting data faster with mysqldump
E) to make it easier to change the PRIMARY KEY value
F) maintaining a history of row insertions or updates

5. Which of the following statements is true regarding MySQL user account privileges?
Response:

A) The GRANT option allows a user to revoke privileges from other users.
B) The USAGE privilege allows a user to connect to the MySQL server but grants no other privileges.
C) The RELOAD privilege allows a user to delete data from a table.
D) A user with the SUPER privilege can only read data from the database.

Solutions: