MySQL 8.0 Database Developer (1Z0-909) Exam Questions 2024
MySQL 8.0 Database Developer (1Z0-909) Practice Tests 2024. Contains 350+ exam
questions to pass the exam in first attempt.
SkillCertPro offers real exam questions for practice for all major IT certifications.
For a full set of 350 questions. Go to
https://skillcertpro.com/product/mysql-8-0-database-developer-1z0-909-
exam-questions/
SkillCertPro offers detailed explanations to each question which helps to
understand the concepts better.
It is recommended to score above 85% in SkillCertPro exams before attempting
a real exam.
SkillCertPro updates exam questions every 2 weeks.
You will get life time access and life time free updates
SkillCertPro assures 100% pass guarantee in first attempt.
Below are the free 10 sample questions.
Question 1:
What is the role of the MySQL Query Optimizer?
A. To automatically create indexes for all database tables
B. To manage user access and permissions
C. To analyze query execution plans and choose the most efficient one
D. To optimize query performance by rewriting SQL queries
Answer: C
Explanation:
The MySQL Query Optimizer analyzes the available execution plans for a query
and chooses the one that is expected to be most efficient based on the available
indexes and statistics.
, Question 2:
What is the benefit of using an ORM (Object Relational Mapping) in data-driven
applications?
A. It enables real-time data analytics
B. It improves database performance
C. It simplifies the process of querying data
D. It enhances data security
Answer: C
Explanation:
ORMs provide a higher-level abstraction for interacting with databases,
simplifying the process of querying and manipulating data.
Question 3:
Which of the following factors can impact query performance in MySQL?
A. Index usage
B. Server hardware specifications
C. Database size
D. Network latency
Answer: A
Explanation:
Factors such as index usage, network latency, server hardware specifications, and
database size can impact query performance in MySQL.
MySQL 8.0 Database Developer (1Z0-909) Practice Tests 2024. Contains 350+ exam
questions to pass the exam in first attempt.
SkillCertPro offers real exam questions for practice for all major IT certifications.
For a full set of 350 questions. Go to
https://skillcertpro.com/product/mysql-8-0-database-developer-1z0-909-
exam-questions/
SkillCertPro offers detailed explanations to each question which helps to
understand the concepts better.
It is recommended to score above 85% in SkillCertPro exams before attempting
a real exam.
SkillCertPro updates exam questions every 2 weeks.
You will get life time access and life time free updates
SkillCertPro assures 100% pass guarantee in first attempt.
Below are the free 10 sample questions.
Question 1:
What is the role of the MySQL Query Optimizer?
A. To automatically create indexes for all database tables
B. To manage user access and permissions
C. To analyze query execution plans and choose the most efficient one
D. To optimize query performance by rewriting SQL queries
Answer: C
Explanation:
The MySQL Query Optimizer analyzes the available execution plans for a query
and chooses the one that is expected to be most efficient based on the available
indexes and statistics.
, Question 2:
What is the benefit of using an ORM (Object Relational Mapping) in data-driven
applications?
A. It enables real-time data analytics
B. It improves database performance
C. It simplifies the process of querying data
D. It enhances data security
Answer: C
Explanation:
ORMs provide a higher-level abstraction for interacting with databases,
simplifying the process of querying and manipulating data.
Question 3:
Which of the following factors can impact query performance in MySQL?
A. Index usage
B. Server hardware specifications
C. Database size
D. Network latency
Answer: A
Explanation:
Factors such as index usage, network latency, server hardware specifications, and
database size can impact query performance in MySQL.
