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 1z0-909 Dumps with Practice Exam Questions Answers

Questions: 65 questions

Last Update: Aug 13, 2022

Oracle Certification Exam 1z0-909 has been designed to measure your skills in handling the technical tasks mentioned in the certification syllabus

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1z0-909 Questions and Answers

Question # 1

Examine this statement which executes successfully:

The table is populated with a range of values including jobs for Robert, John, and Katie. Now, examine this statement and output:

Why is an empty result set returned?

A.

The select requires json_unquoteo in the where clause.

B.

The virtual values in the name column must be accessed using functions.

C.

The JSON datatype cannot be used in virtual columns.

D.

The json_extract() function requires a length value that matches the field length in the schema.

E.

Table statistics must be updated to generate values for the name column.

Question # 2

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.execute(query)

B.

d = cursor.execute(query, (hire_start, hire_end) )

C.

d = cursor.fetch(query % (hire_start, hire_end))

D.

d = cursor.fetch(query, (hire_start, hire_end))

E.

d = cursor . f etchall (query)

F.

d = cursor.fetchall(query, (hire_start, hire_end))

Question # 3

Examine this statement which executes successfully:

SET @ir := 2;

Which query updates the value of @r to 0?

A.

SELECT 'Car' REGEXP('Ca?') >= 0 INTO @r;

B.

SELECT STRCMP(‘Car'/Ca?') >= 0 INTO @r;

C.

SELECT 'Car' LIKE 'Ca?' INTO @r;

D.

SELECT 'Car' RLIKE 'Ca?' INTO @r;

Question # 4

Examine these statement which execute successfully:

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

What is true?

A)

B)

C)

D)

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question # 5

Examine these statements which execute successfully:

Which two changes will improve this query performance?

A.

CREATE INDEX 1X7 ON users (user_name) USING HASH;

B.

CREATE INDEX 1X4 ON Locations (site_id, loc_shared);

C.

CREATE INDEX IX1 ON locations (loc_shareci) ;

D.

CREATE INDEX 1X6 ON users (user_name);

E.

CREATE INDEX 1X3 ON locations

F.

CREATE INDEX 1X2 ON locations (loc_mapping) USING HASH; fH

G.

CREATE INDEX 1X5 ON users (loc_id);

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