Oracle MySQL 2021 Implementation Essentials : 1Z0-921

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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

Question 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. Only the t2 table is 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. Both the tables, t1 and t2, are created.

Question 2

When should you perform a backup in a MySQL database?
Response:

A. Only when the database size exceeds a certain limit.
B. Only during scheduled maintenance windows.
C. After critical data updates or before making significant changes to the database.
D. After every successful query execution.

Question 3

Which three prerequisites are needed for creating an Oracle Linux VM instance in the Oracle Cloud Infrastructure?

A. ssh key pair
B. subnet configured on a Virtual Cloud Network (VCN)
C. Object Storage
D. bare metal Oracle Linux shape
E. existing VCN
F. Custom Image

Question 4

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

A. ALTER TABLE SCIENTIFIC ADD scientific_value INTEGER;
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 BIGINT;

Question 5

Which two are advantages of using Document Store in MySQL?

A. MySQL provides a NoSQL API to access the document store
B. MySQL provides a native data type to index PDF documents
C. MySQL provides a native data type to store JSON data as a document
D. MySQL can store XML as a schema-less database
E. MySQL is a document database allowing PDF and Word documents

Solutions: