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

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

Buffered queries must be explicitly enabled using mysqliuseresult.

Large results can have a negative impact on performance.

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

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

Buffered queries are enabled by default.

Results are sent to the calling PHP process for buffering.

Examine this bar graph based on columns from the players table: Which two statements would generate this bar graph?

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

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

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

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

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

Examine these statements which execute successfully: Which two changes will improve this query performance?

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

CREATE INDEX 1X6 ON users (user_name);

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

CREATE INDEX IX1 ON locations (loc_shareci) ;

CREATE INDEX 1X3 ON locations <loc_site_id) ;

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

CREATE INDEX 1X5 ON users (loc_id);

Examine the structure of the emp table: Examine the structure of the emp_vu1 view based on the emp table: Now, examine this statement: mysq1> INSERT INTO emp_vul VALUES ('Alice',20000) ; What is true about executing the statement?

It inserts a row in the emp table.

It returns an error because an insert operation is not allowed on views.

It inserts a row in the view only.

It returns an error because the PRIMARY ACCOUNT column is not selected for the view definition.

Examine this statement and output: You execute this statement: SELECT JSON_SEARCH(product,'one','IT') FROM fshop ; What is the output?

product->''$.varieties [4]. origin[1];;

product->varieties[3]. origin[0]''

Free Oracle 1Z0-909 Exam Practice Questions & Explanations

Last updated on: Sep 2, 2026
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