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Oracle 1z0-909 Exam Dumps - Actual Questions Answers


1z0-909 practice test questions answers

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1z0-909 Questions and Answers

Question # 1

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.

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

C.

Buffered queries are enabled by default.

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 must be explicitly enabled using mysqliuseresult.

G.

Large results can have a negative impact on performance.

Question # 2

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 ( product JSON, f INT' GENERATED ALWAYS AS (product->"S - id") ) ;

C.

CREATE TABLE fshop (id INT NOT NULL AUTOINCREMENT, product JSON, PRIMARY KEY (id)) ENGINE=InnoDB;

D.

CREATE TABLE fshop (id INT NOT NULL AUTO_ INCREMENT, product JSON, CHECK (id>0) ) ENGXNE=InnoDB;

Question # 3

Examine the structure of the emp table:

3

Examine the structure of the emp_vu1 view based on the emp table:

3

Now, examine this statement:

mysq1> INSERT INTO emp_vul VALUES ('Alice',20000) ;

What is true about executing the statement?

A.

It inserts a row in the emp table.

B.

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

C.

It inserts a row in the view only.

D.

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

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