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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which statement adds a column with the largest integer data type?

A) ALTER TABLE SCIENTIFIC ADD scientific_value BIGINT;
B) ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(15,10);
C) ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(10,10);
D) ALTER TABLE SCIENTIFIC ADD scientific_value INTEGER;

2. Consider this SQL statement which is using the innoDB storage engine and with global AUTOCOMMIT = 1:

What is the result after issuing the rollback command?

A) Only the t1 table is created.
B) Both the tables, t1 and t2, are not created because there is an explicit ROLLBACK.
C) Only the t2 table is created.
D) Both the tables, t1 and t2, are created.

3. 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 will be optimized and replicated.
C) The table statistics will be stored.
D) The table storage space will be reduced.

4. The user 'fwuser'@'localhost% was registered with the MySQL Enterprise Firewall and was granted privileges for the SAKILA database. You executed the commands:

You want to clear the account whitelist for the * fwuser" @* localhost* user. Which statement should you run to accomplish this?

A)

B)

C)

5. Which statement will display the status of the partitioning plug-in?

A) SHOW STATUS PLUGINS WHERE Name= 'PARTITIONING';
B) USE SYS SCHEMA; SHOW PLUGINS STATUS;
C) SHOW PLUGINS WHERE Name= 'partition';
D) SELECT PLUGIN_NAME, PLUGIN_VERSION, PLUGIN_STATUS FROM INFOMRATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME= 'partition';

Solutions: