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Oracle 1z0-882 Exam With Confidence Using Practice Dumps

Exam Code:
1z0-882
Exam Name:
Oracle Certified Professional, MySQL 5.6 Developer
Certification:
Oracle Other Certification
Vendor:
Oracle
Questions:
100
Last Updated:
Dec 22, 2024
Exam Status:
Stable
Oracle 1z0-882

1z0-882: Oracle Other Certification Exam 2024 Study Guide Pdf and Test Engine

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Oracle Certified Professional, MySQL 5.6 Developer Questions and Answers

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Question 1

Which three statements describe valid reasons why queries that use “SELECT” construct are discouraged?

Options:

A.

SELECT * may cause more data than you need to be read from disk if your application needs only some columns.

B.

SELECT * causes more data than you need to be sent via the client/server protocol if your application needs only some columns.

C.

SELECT * prevents the use of indexes, so a full table scan for every query.

D.

SELECT *causes your application to depend on the columns present when you wrote it , so your application could break if the table structure changes.

E.

SELECT * causes the statements to return all rows from the table.

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Question 2

Examine the fruit and wine tables:

Fruit

You execute this query:

SELECT fruited, fruitname FROM fruit

UNION

SELECT id, name, country FROM wine;

What is the result?

Options:

A.

The query succeeds and returns five columns of data.

B.

The query succeeds and returns two columns of data.

C.

The query falls because UNION does not work on tables with different number of columns.

D.

The query falls because the number of columns in the SELECT in the SELECT clauses are not equal.

Question 3

Which two can be used to obtain information stored in the Diagnostics Area?

Options:

A.

SHOW WARNINGS

B.

GET DIAGNOSTICS CONDITION 1 @errno=MYSQL_ERRNO, @msg =MESSAGE_TEXT;

SELECT @errno, @msg;

C.

SELECT ERRNO, MESSAGE_TEXT FROM INFORMATION_SCHEMA.DIAGNOSTICS_AREA WHERE CONDITION=1

D.

SHOW GLOBAL STATUS LIKE ‘Diagnostics’

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