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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:
Apr 4, 2025
Exam Status:
Stable
Oracle 1z0-882

1z0-882: Oracle Other Certification Exam 2025 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

As a developer, you inherit this table as part of a project:

CREATE TABLE exam (

Exam_id INTEGER UNSIGNED NOT NULL PRIMARY KEY,

Examinee_id INTEGER UNSIGNED UNIQUE,

Score INTEGER UNSIGNED

)

What change should you make to ensure that examinee_id is an integer value throughout the table?

Options:

A.

The examinee_id column should be designated as PRIMARY KEY.

B.

A NOT NULL qualifier should be moved from exam-id to examinee-id.

C.

The PRIMARY KEY should be dropped and re-created as PRIMARY KEY (examinee-id, exam_id).

D.

A NOT NULL qualifier should be added to examinee_id.

Question 3

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.

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