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Oracle 1z0-909 Exam With Confidence Using Practice Dumps

Exam Code:
1z0-909
Exam Name:
MySQL 8.0 Database Developer
Certification:
MySQL Developer
Vendor:
Oracle
Questions:
65
Last Updated:
Nov 21, 2024
Exam Status:
Stable
Oracle 1z0-909

1z0-909: MySQL Developer Exam 2024 Study Guide Pdf and Test Engine

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MySQL 8.0 Database Developer Questions and Answers

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Question 1

Which select statement returns true?

Options:

A.

SELECT NULL <> NULL;

B.

SELECT NULL <=> NULL;

C.

SELECT NULL = NULL;

D.

SELECT NULL := NULL;

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Question 2

Examine this statement and output:

Which is true?

Options:

A.

The underlying table's index on the Name column is not chosen because of low selectivity.

B.

myview cannot be automatically indexed.

C.

myview was defined with the temptable processing algorithm.

D.

Column Name in myview can be indexed if the is_updatable attribute is true.

Question 3

Examine this statement and output:

CREATE TABLE geom (g GEOMETRY NOT NOLL, SPATIAL INDEX(g) ) ; Query OK, 0 rows affected, 1 warning (0.01 sec)

An attempt is made to add an SRID attribute to the column using the statement:

ALTER TABLE geom MODIFY COLUMN g geometry NOT NULL SRID 0;

Which is true?

Options:

A.

An error is generated because srid o is an invalid identifier value.

B.

Execution succeeds with a warning.

C.

An error is generated because the index prevents changes to the column.

D.

Execution succeeds and allows the use of the index by the optimizer.

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