Oracle New 2023 1z1-909 Sample Questions Reliable 1z1-909 Test Engine [Q22-Q40]

Oracle New 2023 1z1-909 Sample Questions Reliable 1z1-909 Test Engine

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NEW QUESTION 22
Examine this statement which executes successfully:
CREATE TABLE 'fshop' ('product' JSON DEFAULT NULL ) ENGINE=InnoDB;
Now, examine a json value contained in the table:
{"name" : "orange", "varieties" : [{"VarietyName":"Clementine", "Origin" : ["PA", "BU"] }, {"VarietyName": "tangerine", "Origin" : ["CH","JP"]>]> Which will cause documents to be indexed over the 'name' key?

A. ALTER TABLE fshop ADD COLUMN name VARCHAR(20) AS (product-
>* S .varieties. VarietyName ' ) VIRTUAL, ADD KEY idx_name (name.) ;
B. ALTER TABLE fshop ADD name VARCHAR(20) AS (JSON_ONQUOTE (product->"S.varieties.VarietyName")), ADD INDEX (name);
C. ALTER TABLE fshop ADD COLUMN name VARCHAR(100) AS (product->' S - varieties' ) VIRTUAL, ADD KEY idx_name (name) ;
D. ALTER TABLE fshop ADD COLUMN name VARCHAR(20) AS (product->' S - name' ) VIRTUAL, ADD KEY idx_name (name) ;
E. ALTER TABLE fshop ADD COLUMN name VARCHAR(20), ADD KEY idx_name (name) ;

Answer: C

NEW QUESTION 23
You are using buffered queries with PHP mysqli in a browser-based web application. Which three are true?

A. Additional queries on the same session are blocked until the result set is released.
B. Buffered queries must be explicitly enabled using mysqliuseresult.
C. Results are sent from the server to the browser for buffering.
D. Buffered queries should be used on large tables when the result size is unknown.
E. Results are sent to the calling PHP process for buffering.
F. Buffered queries are enabled by default.
G. Large results can have a negative impact on performance.

Answer: B,D,G

NEW QUESTION 24
Which statement is true about the show errors command?

A. It cannot display information for more than max_errot_count server system variable setting.
B. It displays errors messages only, since the server last restarted.
C. It displays similar diagnostics results as get diagnostics.
D. It displays errors messages only, since the start time of the current session.
E. It displays the total number of errors, warnings, and notes since the server last restarted.
F. It displays the total number of errors, warnings, and notes since the beginning of the current session.

Answer: F

NEW QUESTION 25
Examine this statement and output:

Now, examine these desired output values:

Which statement updates the table data as require

A. UPDATE examresult SET score=ROUND(CEIL(score
B. UPDATE exam_result SET score=CEIL(ROUND(score,1));
C. UPDATE exam_result SET score=TRUNCATE
D. UPDATE exam_result SET score=TRUNCATE(score,1);
E. UPDATE exam_result SET score=ROUND(score,1);
F. UPDATE exam_result SET score=CEIL(TRUNCATE(sco

Answer: E

NEW QUESTION 26
Examine this statement and output:

What causes the error?

A. The database client process does not have sufficient privilege.
B. The set local_infile option has not been enabled.
C. The database user does not have sufficient privilege.
D. The database server is running in read-only mode.
E. The engine is disabled.
F. The database server process does not have sufficient privilege.

Answer: F

NEW QUESTION 27
Which two are true about indexes?

A. Indexing all of a table's columns improves performance.
B. Indexes contain rows sorted by key values.
C. Indexes are used to enforce unique constraints.
D. Secondary index access will always be faster than a table scan.
E. Indexes reduce disk space used.

Answer: A,E

NEW QUESTION 28
What is an advantage of using mysqli in PHP programs rather than using PHP Data Objects (PDO)?

A. mysqli can access databases from other vendors.
B. mysqli supports non blocking, asynchronous queries.
C. mysqli includes X DevAPI functions.
D. mysqli supports object oriented programming.

Answer: D

NEW QUESTION 29
Examine these statement which execute successfully:

Now, examine this desired output:

Which two queries will produce the out?
A)

B)

D)

E)

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

Answer: A,B

NEW QUESTION 30
Examine these statements and output:

Now, examine this command:
Mysql> ROLLBACK;
What is true about the effect of the command?

A. It undoes both insert and update commands.
B. It undoes the update command.
C. It has no effect.
D. It undoes the insert command.
E. It returns an error because there is no active transaction.

Answer: D

NEW QUESTION 31
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)

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

Answer: A

NEW QUESTION 32
Examine these statements:
SET collation_connection=utf8mb4_0900_as_cs;
SELECT STRCMPCAlice', UCASE ('Alice* )) ;
What is displayed?

A. ERROR: 1267 (HYOOO): Illegal mix of collations
B. 0
C. 1
D. 2
E. NULL

Answer: E

NEW QUESTION 33
Which two differences exist between the timestamp and date time data types?

A. timestamp uses less storage space.
B. timestamp has larger range of values.
C. timestamp converts the value based on the session time zone.
D. timestamp stores more decimal points in seconds
E. timestamp stores the interval between two dates.

Answer: A,C

NEW QUESTION 34
You must enforce data integrity for data Inserted in a JSON column.
Which statement successfully creates a constraint in a 3SON column?

A. CREATE TABLE fshop (product JSON CHECK (JSON_VALID(product) ) ) ;
B. CREATE TABLE fshop (id INT NOT NULL AUTOINCREMENT, product JSON, PRIMARY KEY (id)) ENGINE=InnoDB;
C. CREATE TABLE fshop ( product JSON, f INT' GENERATED ALWAYS AS (product->"S - id") ) ;
D. CREATE TABLE fshop (id INT NOT NULL AUTO_ INCREMENT, product JSON, CHECK (id>0) ) ENGXNE=InnoDB;

Answer: B

NEW QUESTION 35
Examine this statement which has executed successfully:

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

Answer: B

NEW QUESTION 36
Examine this event's metadata:

Now examine this command:
DROP USER 'userl'e'localhost';
Which effect will the command have on the event?

A. The event will be dropped without an error or warning.
B. The event is scheduled but will no longer execute. The system will log an error.
C. The event is scheduled and executed but fails. The system will log an error.
D. The event is not scheduled and will no longer execute. The system will log an error.

Answer: B

NEW QUESTION 37
The collection col contains all episodes for all seasons for a TV show.
Examine this document which has an example of the details for each episode:

Which query returns all expisode names from the first season?

A. SELECT doc->"$.name" FROM col WHERE doc->"$.season" = "1";
B. SELECT doc->,$.name,, FROM col WHERE doc->"$ . season" = "1";
C. SELECT name FROM col WHERE season = 1;
D. SELECT "S.name" FROM col WHERE "S.season" = "1";

Answer: D

NEW QUESTION 38
The variables c and d are declared as integer types.
Examine these initialization statements with placeholder value <p1>, which execute successfully:
Now, examine this loop which executes successfully:

Which loop results in the same value of d for all valid values of <p1>?
A)

B)

C)