Most Recent Oracle 1Z0-082 Exam Questions & Answers

Prepare for the Oracle Database Administration I exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

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The questions for 1Z0-082 were last updated on Nov 20, 2024.

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Question No. 1

The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.

NLS_DATE_FORMAT is set to DD-MON-RR.

Which two are true about data type conversions involving these columns in query expressions? (Choose two.)

ACONCAT (qty_sold, invoice_date) : requires explicit conversion

Binvoice_date = '15-march-2019' : uses implicit conversion

Cinvoie_date > '01-02-2019' : uses implicit conversion

Dqty_sold BETWEEN '101' AND '110' : uses implicit conversion

Eqty_sold = '0554982' uses implicit conversion

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Correct Answer: B, D

Question No. 2

Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data? (Choose four.)

AA table can have only one primary key but multiple foreign keys

BA table can have only one primary key and one foreign key

CThe foreign key columns and parent table primary key columns must have the same names

DIt is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted

EIt is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted

FOnly the primary key can be defined at the column and table level

GPrimary key and foreign key constraints can be defined at both the column and table level

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Correct Answer: A, C, E, G

Question No. 3

Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER.

Examine these SQL statements:

Statement 1:

SELECT MAX(unit_price * quantity) ''Maximum Order''

FROM order_items;

Statement 2:

SELECT MAX(unit_price * quantity) ''Maximum Order''

FROM order_items

GROUP BY order_id;

Which two statements are true?

AStatement 1 returns only one row of output.

BStatement 2 returns only one row of output.

CBoth statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL.

DBoth the statements give the same output.

EStatement 2 may return multiple rows of output.

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Correct Answer: A, E

https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj27781.html

The Expression can contain multiple column references or expressions, but it cannot contain another aggregate or subquery. It must evaluate to a built-in data type. You can therefore call methods that evaluate to built-in data types. (For example, a method that returns a java.lang.Integer or int evaluates to an INTEGER.) If an expression evaluates to NULL, the aggregate skips that value.

Question No. 4

Which three files are used by conventional path SQL*Loader when the TABLE option is not specified? (Choose three.)

Adump files

Bcontrol files

Cpassword files

Dbad files

Einput files

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Correct Answer: B, D, E

Question No. 5

Which three statements are true about inner and outer joins? (Choose three.)

AA full outer join returns matched and unmatched rows

BAn inner join returns matched rows

COuter joins can only be used between two tables per query

DA full outer join must use Oracle syntax

EOuter joins can be used when there are multiple join conditions on two tables

FA left or right outer join returns only unmatched rows

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Correct Answer: A, B, F

https://www.studytonight.com/dbms/joining-in-sql.php

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