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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Your newly-created Oracle Cloud Infrastructure instance is not available for login in. Which is a valid reason for this issue?

A) The opc user can be used to access MySQL only with the created SSH-Key.
B) You forgot to create the correct SSL/TLC certificate during the setup process.
C) Only root is allowed to access from non-localhost.
D) You forgot to enable port 3306.
E) The OCI instance is still in the "creation" process.

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

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

3. Which three are characteristics of the JSON data type?

A) Comparisons of JSON values are not case-sensitive.
B) Key or array references enable quick read-access to look up document elements directly.
C) It is based on the TEXT data type.
D) It validates the JSON syntax on insert or merge.
E) A set of SQL functions substantially support the SQL utilization of the data type.
F) It supports indexing directly against the JSON-defined column.

4. Which three are requirements for MySQL Group Replication (GR)?

A) GR only works with MySQL versions 8.0.12 or higher.
B) The binary log format must be set to mixed.
C) Data to be replicated must be stored in the InnoDB transactional storage engine.
D) The use of global transaction identifiers is required.
E) Primary keys are required on every replicated table.
F) The minimum number of required nodes for achieving a consensus is two.

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

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

Solutions: