1Z0-909 Questions | Free Practice 1Z0-909 Dumps & Exam Prep

Question No 1

Examine these statements: SET collation_connection=utf8mb4_0900_as_cs; SELECT STRCMPCAlice', UCASE ('Alice* )) ; What is displayed?

Choose the Choices:

Question No 2

Examine these commands and output: Which is true?

Choose the Choices:

Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.

A new view is created because the previous was dropped on execution of the drop table statement.

It returns an error because the CREATE TABLE statement automatically recreated the view.

It returns an error because the DROP TABLE statement did not drop the view.

Question No 3

Which select statement returns true?

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Question No 4

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?

Choose the Choices:

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.

Question No 5

Examine this statement which has executed successfully:

Choose the Choices:

Execution performance can be improved by using like instead of RLIKE.

The statement takes advantage of index description_idx.

Execution performance can be improved by, using a composite index with column description as the leftmost prefix column description.

No index will improve statement performance.

Execution performance can be improved by adding an index on column description.

Free Oracle 1Z0-909 Questions

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