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  • Questions: 65 Q&A's
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  • Exam Name: MySQL 8.0 Database Developer
  • Last Update: 15-Oct-2025
  • Questions and Answers: 65
  • Single Choice: 48 Q&A's
  • Multiple Choice: 17 Q&A's

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1z0-909 Questions and Answers

Question # 1

Which two are true about indexes?

A.

Secondary index access will always be faster than a table scan.

B.

Indexing all of a table's columns improves performance.

C.

Indexes contain rows sorted by key values.

D.

Indexes reduce disk space used.

E.

Indexes are used to enforce unique constraints.

Question # 2

Examine these statement which execute successfully:

1z0-909 question answer

Now, examine the statements executed in the mysqi command-line client:

1z0-909 question answer

What is true?

A)

1z0-909 question answer

B)

1z0-909 question answer

C)

1z0-909 question answer

D)

1z0-909 question answer

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question # 3

Examine the structure of the emp table:

1z0-909 question answer

Examine the structure of the emp_vu1 view based on the emp table:

1z0-909 question answer

Now, examine this statement:

mysq1> INSERT INTO emp_vul VALUES ('Alice',20000) ;

What is true about executing the statement?

A.

It inserts a row in the emp table.

B.

It returns an error because an insert operation is not allowed on views.

C.

It inserts a row in the view only.

D.

It returns an error because the PRIMARY ACCOUNT column is not selected for the view definition.

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