[2023年05月14日] 実際の1Z0-909試験問題集は2023年最新のOracle練習試験合格させます [Q16-Q38]

[2023年05月14日] 実際の1Z0-909試験問題集は2023年最新のOracle練習試験合格させます

2023年最新の実際にある1Z0-909問題集テストエンジン試験問題はここにある

Oracle 1z1-909認定試験は、データベース開発でキャリアを進めたいプロフェッショナルにとって貴重な資格です。これにより、MySQL 8.0データベース開発の熟練度が証明され、求職者の市場における競争力が高まります。この認定は、グローバルに認められ、IT業界の雇用主から高く評価されています。

 

質問 # 16
Examine these statement which execute successfully:

Now, examine this desired output:

Which two queries will produce the out?
A)

B)


D)

E)

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

正解：A、E

質問 # 17
Your program which uses a MySQL connector receives this error:
Client does not support authentication protocol request by server
The account running the program uses caching_sha2_password.
Which two resolve this conflict?

• A. Place this in the root directory of your shell account:
  [mysqld] require__secure_transport=OFF
• B. Change the user account to use mysql_native_password.
• C. Disable TLS/SSL authentication.
• D. Use blank RSA or SSL certificates.
• E. Upgrade the connector to a version that supports caching_sha2_password.

正解：E

質問 # 18
Examine this statement which has executed successfully:

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

正解：C

質問 # 19
Examine this statement and output:

Which will provide the same level of detail when the error is encountered within a stored routine?

• A.
• B.
• C.
• D.

正解：D

質問 # 20
Examine the output:

Which explain command will obtain the output?

• A. EXPLAIN PORMAT^TRADITIONAL
• B. EXPLAIN ANALYZE
• C. EXPLAIN PARTITIONS
• D. EXPLAIN PORMAT=JSON
• E. EXPLAIN FORMAT=TREE

正解：C

質問 # 21
Which change will prevent negative ages to be inserted into the people table?

• A. DELIMITER //
  CREATE TRIGGER age check AFTER INSERT ON people FOR EACH ROW IF NEW. age < 0 THEN SET NEW.age =0; END IF;// DELIMITER;
• B. ALTER TABLE people ADD CONSTRAINT check_age CHECK (ABS(age)>=0);
• C. ALTER TABLE people ADD COLUMN valid_age=ABS(check_age) GENERATED ALWAYS;
• D. DELIMITER //
  CREATE TRIGGER agecheck BEFORE INSERT ON people FOR EACH ROW IF NEW. age < 0 THEN SET NEW.age =0; END IF;// DELIMITER ;

正解：B

質問 # 22
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 A
• B. Option D
• C. Option C
• D. Option B

正解：D

質問 # 23
Examine these commands which execute successfully in the sequence shown in Sessions S1 and S2:

Now, examine this statement that execute successfully in s1:
S1> SELECT * FROM emp;
Which is true about the result of the select statement?

• A. The inserted row is not returned because the transaction still active in s2.
• B. The inserted row is returned because the transaction is auto committed in S2.
• C. The inserted row is returned because the isolation level is RPEATABLE READ in S1.
• D. The inserted row is not returned because the isolation level is READ COMMITTED in S2.

正解：A

質問 # 24
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 the interval between two dates.
• E. timestamp stores more decimal points in seconds

正解：D、E

質問 # 25
Examine these statements issued from Session 1 which execute successfully:

Now, examine these statements issued from Session 2 which execute successfully:
Session 2>
BEGIN;
UPDATE band SET song=CONCAT ("Here Comes the ", song) WHERE song LIKE ' %Sun ; Which two are true?

• A. Session 2 takes an exclusive lock on all the rows in the band table.
• B. Session 2 does not start a transaction.
• C. Statements in Session 2 are committed.
• D. Session 1 must commit before the update in Session 2 can complete.
• E. Session 1 does not block Session 2.
• F. Session 1 takes a shared lock on all the rows in the band table.

正解：C、D

質問 # 26
Examine these statements which execute successfully:

Now, examine this query:

What is the result?

• A. It fails with a warning.
• B. It inserts a row with an error.
• C. It fails with an error.
• D. It inserts a row with a warning.
• E. It inserts a row with no error or warning.

正解：E

質問 # 27
Which select statement returns true?

• A. SELECT NULL <> NULL;
• B. SELECT NULL <=> NULL;
• C. SELECT NULL := NULL;
• D. SELECT NULL = NULL;

正解：B

質問 # 28
Examine this statement which executes successfully:
SET @ir := 2;
Which query updates the value of @r to 0?

• A. SELECT 'Car' RLIKE 'Ca?' INTO @r;
• B. SELECT 'Car' REGEXP('Ca?') >= 0 INTO @r;
• C. SELECT 'Car' LIKE 'Ca?' INTO @r;
• D. SELECT STRCMP('Car'/Ca?') >= 0 INTO @r;

正解：A

質問 # 29
Examine the appointments table definition which contains one million rows:

Now, examine this statement which executes successfully:

Which statement will improve query performance?

• A. ALTER TABLE appointments add index IX_1(credit,payment)
• B. ALTER TABLE appointments add index IX_2(attendant_session_id, created_by)
• C. ALTER TABLE appointments add index IX_4<attendant_id, payment, credit)
• D. ALTER TABLE appointments add index IX_3(attendant_id, created_by)

正解：C

質問 # 30
Examine the output:

Which explain command will obtain the output?

• A. EXPLAIN PORMAT^TRADITIONAL
• B. EXPLAIN ANALYZE
• C. EXPLAIN PORMAT=JSON
• D. EXPLAIN PARTITIONS
• E. EXPLAIN FORMAT=TREE

正解：C

質問 # 31
Which two statements are true about aggregate functions?

• A. AVG () does not allow use of the distinct option.
• B. SUM () returns o if there are no rows to aggregate.
• C. MIN () cannot use distinct when it executes as a Windows function.
• D. MAX () returns null if there are no rows to aggregate.
• E. COUNT (distinct) returns a count of the number of rows with different values including Null.

正解：A

質問 # 32
Examine these commands and output:


Which is true about the execution of the insert statement?

• A. It inserts a row in the view and base table.
• B. It inserts a new row in the base table only.
• C. It returns an error.
• D. It inserts a new row in the view only.

正解：D

質問 # 33
Examine the content of the employee table:

Now examine this PHP script:

Finally examine this desired output:

• A. $options = [PDO:: ATTR_DEFAUXT_FETCH__MODE => PDO: : PDO: :FETCH_OBJ] ;
• B. $options = [PDO:: ATTR__DEFAULT_FETCH MODE => PDO: :FETCH_CLASS] ;
• C. $options = [PDO:: ATTR_DEFAOLT_FETCH__MODE => PDO : : FETCH_BOTH] ;
• D. $options = [PDO:: ATTR_DEFAULT_FETCH__MODE => PDO: : FETCH_ASSOC] ;

正解：C

質問 # 34
Examine these statement which execute successfully:

Now, examine this desired output:

Which two queries will produce the out?

• A.
• B.
• C.
• D.
• E.

正解：A、B

質問 # 35
Examine this table definition:

The table must always remain a valid document store collection. What restriction does this impose on any added column?

• A. The column must be indexed.
• B. The column must be used in a unique constraint.
• C. The column must have a default value.
• D. The column must be a generated column referencing any attribute of doc.
• E. The column must be a generated column referencing only an existing attribute of doc.

正解：D

質問 # 36
Examine the layout of the my_values table.

Examine the data in the my_value3 table.

Examine this statement:

A)

B)


D)

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

正解：D

質問 # 37
Examine these commands which execute successfully:
mYsql> CREATE TABLE income (acct_num INT, amount DECIMAL(10,2));
mysql> CREATE TRIGGER subtotal BEFORE INSERT ON income
FOR EACH ROW SET @subtotal = subtotal + NEW.amount;
Which is true for the income table?

• A. The trigger activates after any row in the table has been updated.
• B. The trigger activates after any row has been inserted into the table.
• C. The trigger body set causes trigger activation.
• D. Execution of an insert statement causes the trigger to activate.

正解：D

質問 # 38
......

Oracle 1Z0-909 試験の準備をするためには、MySQL 8.0 データベースの概念を強く理解し、MySQL データベースでの作業経験が必要です。オンラインコース、学習ガイド、模擬試験など、さまざまな学習リソースを活用することができます。また、MySQL で実践的な経験を積み、実世界のプロジェクトに取り組むことで自分のスキルを開発することも推奨されています。

 

更新された問題を提供しています1Z0-909問題集PDF：https://jp.fast2test.com/1Z0-909-premium-file.html

更新された公式問題1Z0-909認定には1Z0-909問題集PDF：https://drive.google.com/open?id=1iKIRwSMZw9sPxGQ3heTpVTYHiBSWRb3D