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The Oracle 1Z0-909 exam is designed for those who want to become a MySQL 8.0 database developer. It is an advanced-level exam that measures your skills and knowledge in developing and maintaining MySQL 8.0 databases. This exam is part of the Oracle Certified Professional, MySQL 8.0 Database Developer certification.

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To pass the Oracle 1z1-909 exam, you need to have a solid understanding of MySQL database architecture, data modeling, and SQL programming. You should also have experience in database management, performance optimization, and security. The exam consists of 60 multiple-choice questions and lasts for 105 minutes. To pass the exam, you need to score at least 63% of the total marks. The exam is available in English and Japanese, and you can take it at any Pearson VUE testing center around the world.

Oracle MySQL 8.0 Database Developer Sample Questions (Q51-Q56):

NEW QUESTION # 51
The employee table includes these columns:
e_id INT, e_name VARCHAR (45), dept_id INT salart INT
You must create a stored function, getMaxSalary(), which returns the maximum salary paid for a given department id.
Which statement will create the function?
A)

B)

C)

D)

A. Option C
B. Option D
C. Option A
D. Option B

Answer: C

NEW QUESTION # 52
Examine this statement and output:

Which is true?

A. The underlying table's index on the Name column is not chosen because of low selectivity.
B. myview cannot be automatically indexed.
C. Column Name in myview can be indexed if the is_updatable attribute is true.
D. myview was defined with the temptable processing algorithm.

Answer: D

NEW QUESTION # 53
Examine this statement which has executed successfully:

A. Execution performance can be improved by, using a composite index with column description as the leftmost prefix column description.
B. No index will improve statement performance.
C. The statement takes advantage of index description_idx.
D. Execution performance can be improved by adding an index on column description.
E. Execution performance can be improved by using like instead of RLIKE.

Answer: A

NEW QUESTION # 54
Examine these lines of Python code:

You must add a line of code to complete the code to return data to the variable d. Which line will do this?

A. d = cursor . f etchall (query)
B. d = cursor.fetch(query % (hire_start, hire_end))
C. d = cursor.fetchall(query, (hire_start, hire_end))
D. d = cursor.fetch(query, (hire_start, hire_end))
E. d = cursor.execute(query, (hire_start, hire_end) )
F. d = cursor.execute(query)

Answer: D

NEW QUESTION # 55
Examine the contents of these tables:

Now examine the expected results for a user with privileges to access the table:

Which query returns the expected results?
A)

B)

C)

D)