2026年現在、1z1-909試験の出題内容は公式の改訂に伴って変わることがあり、古い教材での対策はリスクになりかねません。PassTestのOracle MySQL 8.0 Database Developer問題集は365日間の無料更新付きで、常に最新の内容で学習を続けられます。

Oracle 1z1-909 試験概要:

Oracle 1z1-909 試験シラバストピック:

Oracle 1z1-909 試験 Q&A まとめ

Oracle MySQL 8.0 Database Developer 認定 1z1-909 試験問題：

問題 #1

Examine these MySQL Shell statements:

What is the true about the attempts to add document to the collection?

A. First two documents are added, then mismatched field names cause an error.
B. First three documents are added, then different number of fields cause an error.
C. All documents are added without any error or warning.
D. First two documents are added, then mismatched field names cause a warning.
E. All documents are added and cause a warning.

問題 #2

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 C
C. Option B
D. Option D

問題 #3

Examine these statements which execute successfully:

Which two changes will improve this query performance?

A. CREATE INDEX 1X3 ON locations <loc_site_id) ;
B. CREATE INDEX 1X7 ON users (user_name) USING HASH;
C. CREATE INDEX 1X6 ON users (user_name);
D. CREATE INDEX 1X5 ON users (loc_id);
E. CREATE INDEX 1X4 ON Locations (site_id, loc_shared);
F. CREATE INDEX IX1 ON locations (loc_shareci) ;
G. CREATE INDEX 1X2 ON locations (loc_mapping) USING HASH; fH

問題 #4

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

問題 #5

Examine these commands and output:

Which is true?

A. It returns an error because the DROP TABLE statement did not drop the view.
B. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.
C. A new view is created because the previous was dropped on execution of the drop table statement.
D. It returns an error because the CREATE TABLE statement automatically recreated the view.

解説：