최신 1z1-909 무료덤프 - Oracle MySQL 8.0 Database Developer

문제1

Examine this bar graph based on columns from the players table:

Which two statements would generate this bar graph?

A. SELECT Name, Gender, Sport, LENGTH (GPA*10, '# ') AS GPA_Graph FROM players ORDER BY GPA DESC;

B. SELECT Name, Gender, Sport, RPAD ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

C. SELECT Name, Gender, Sport, REPEAT('# 'Y GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

D. SELECT Name, Gender, Sport, CONCAT ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

E. SELECT Name, Gender, Sport, CHAR_LENGTH ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

정답: B,C

문제2

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

A. Buffered queries should be used on large tables when the result size is unknown.

B. Buffered queries are enabled by default.

C. Large results can have a negative impact on performance.

D. Buffered queries must be explicitly enabled using mysqliuseresult.

E. Results are sent to the calling PHP process for buffering.

F. Results are sent from the server to the browser for buffering.

G. Additional queries on the same session are blocked until the result set is released.

정답: A,C,D

문제3

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. The trigger body set causes trigger activation.

C. The trigger activates after any row in the table has been updated.

D. Execution of an insert statement causes the trigger to activate.

정답: D

문제4

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 insert command.

C. It undoes the update command.

D. It has no effect.

E. It returns an error because there is no active transaction.

정답: B

문제5

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 name FROM col WHERE season = 1;

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

D. SELECT "S.name" FROM col WHERE "S.season" = "1";

정답: D

문제6

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

A. timestamp converts the value based on the session time zone.

B. timestamp has larger range of values.

C. timestamp stores the interval between two dates.

D. timestamp uses less storage space.

E. timestamp stores more decimal points in seconds

정답: A,D

문제7

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.

정답: B

최신 1z1-909 무료덤프 - Oracle MySQL 8.0 Database Developer

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