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Oracle MySQL 2021 Implementation Essentials Sample Questions:

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

2. Which is true about inserting an additional line in a single document stored in MySQL document store?

A) The path specified must be an array position past the end of an array using the JSON_POSITION statement.
B) Any new lines can only be inserted at the end of the document.
C) You specify the new element,s position in the JSON_ARRAY_INSERT statement.
D) You cannot insert a single line, you have to replace the entire document with a new document.

3. Which statement would you use to remove the population column from the city table?

A) ALTER TABLE city DROP population;
B) ALTER TABLE city LESS population;
C) ALTER TABLE city DELETE population;
D) DROP population FROM city;
E) DELETE population FROM city;

4. MySQL Enterprise Masking and De-identification can hide or obfuscate sensitive data, by controlling how the data appears. Which three are MySQL Enterprise Masking and De-identification functions?

A) random data substitution
B) misspelling
C) dictionary substitution
D) whitelisting and substitution
E) strict or relaxed masking

5. Which two statements are true about MySQL Enterprise Firewall?

A) The firewall functionality is dependent upon SHA-256 and ANSI-specific functions built in to the mysql.firewall table. These functions cannot be deleted, even by the root user.
B) On Windows systems, MySQL Enterprise Firewall is controlled and managed by using the Windows Internet Connection Firewall control panel.
C) System tables named firewall_users and firewall_whitelist in the mysql database provide persistent storage of firewall data.
D) MySQL Enterprise Firewall is available only in MySQL Enterprise versions 5.7.10.and later.
E) MySQL Enterprise Firewall shows only notifications blocked connections, which originated outside of your network's primary domain.
F) Server-side plug-ins named MYSQL_FIREWALL_USERS and MYSQL_FIREWALL-WHITELIST implement INFORMATION_SCHEMA tables that provide views into the firewall data cache.

Solutions: