Quiz Oracle - 1z0-071 - Oracle Database SQL–Reliable Reliable Test Duration

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1z0-071 Exam Introduction, Valid 1z0-071 Exam Prep

1z0-071 exam questions are being offered in three easy-to-use and compatible formats. The Oracle 1z0-071 PDF dumps file, desktop practice test software, and web-based practice test software. All three 1z0-071 Exam Questions format contain the Oracle 1z0-071 actual questions and help you in 1z0-071 exam preparation entirely.

To pass the Oracle 1z0-071 Certification Exam, you need to have a good understanding of SQL and its syntax. You should also be familiar with database concepts such as data modeling, normalization, and indexing. In addition, you need to have hands-on experience with Oracle Database SQL to be able to answer the exam questions effectively.

Oracle Database SQL Sample Questions (Q125-Q130):

NEW QUESTION # 125
In the PROMOTIONS table, the PROMO_BEGIN_DATEcolumn is of data type DATEand the default date format is DD-MON-RR.
Which two statements are true about expressions using PROMO_BEGIN_DATEcontained a query? (Choose two.)

A. PROMO_BEGIN_DATE - SYSDATEwill return a number.
B. TO_NUMBER(PROMO_BEGIN_DATE)- 5 will return a number.
C. TO_DATE(PROMO_BEGIN_DATE * 5)will return a date.
D. PROMO_BEGIN_DATE- 5 will return a date.
E. PROMO_BEGIN_DATE - SYSDATEwill return an error.

Answer: A,D

NEW QUESTION # 126
Examine the description of the countries table:

Examine the description of the departments table:

Examine the description of the locations table:

Which two queries will return a list of countries with no departments?

Answer: B,D

Explanation:
The query's goal is to return a list of countries that have no departments linked to them.
Option B and Option D are the correct answers because they use set operations that will effectively return countries that do not have a corresponding entry in the departments table:
* Option B uses the NOT IN subquery to exclude countries that have departments linked to them. It looks for country_id values in the countries table that are not present in the list of country_id values associated with locations that are, in turn, associated with departments. This will correctly return countries that have no departments.
* Option D uses the MINUS set operator, which subtracts the results of the second SELECT statement from the results of the first. This statement will return all countries from the countries table minus those that have an associated department_id in the departments table, effectively listing countries with no departments.
Option A and Option C are incorrect because:
* Option A will not execute successfully as it tries to join tables using a column (country_id) that doesn't exist in the departments table, which will lead to an error.
* Option C's use of INTERSECT is incorrect for this requirement. INTERSECT returns only the rows that exist in both queries. Since we want countries with no departments, using INTERSECT would actually return the opposite of what is required.
References:
* Oracle Documentation on NOT IN clause: SQL Language Reference - Subquery
* Oracle Documentation on MINUS operator: SQL Language Reference - Set Operators Therefore, the correct options are B and D, which use subquery exclusion and the MINUS set operator, respectively, to accurately identify and return countries without departments.

NEW QUESTION # 127
Which three statements are true regarding the data types?

A. The value for a CHARdata type column is blank-padded to the maximum defined column width.
B. A TIMESTAMPdata type column stores only time values with fractional seconds.
C. The minimum column width that can be specified for a VARCHAR2data type column is one.
D. Only one LONGcolumn can be used per table.
E. The BLOBdata type column is used to store binary data in an operating system file.

Answer: A,C,D

NEW QUESTION # 128
Examine the structure of the BOOKS_TRANSACTIONS table:
NameNull?Type
------------------------------------------------------------
TRANSACTION_IDNOT NULLVARCHAR2 (6)
BORROWED_DATEVARCHAR2 (50)
DUE_DATEDATE
BOOK_IDDATE
MEMBER_IDVARCHAR2 (6)
You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute?

A. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", '$2' AS "LATE FEE" FROM BOOKS_TRANSACTIONS;
B. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", $2 AS "LATE FEE" FROM BOOKS_TRANSACTIONS;
C. SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE
FROM BOOKS_TRANSACTIONS;
D. SELECT member_id 'MEMBER ID', due_date 'DUE DATE', '$2 AS LATE FEE' FROM BOOKS_TRANSACTIONS;

Answer: A

NEW QUESTION # 129
Examine the description of the CUSTOMERS table:
Which three statements will do an implicit conversion?

A. SELECT * FROM customers WHERE TO_DATE(insert_date)=DATE'2019-01-01';
B. SELECT * FROM customers WHERE insert_date'01-JAN-19';
C. SELECT * FROM customers WHERE TO_CHAR(customer_id)='0001';
D. SELECT * FROM customers WHERE customer_id=0001;
E. SELECT * FROM customers WHERE insert_date=DATE'2019-01-01';
F. SELECT * FROM customers WHERE customer_id='0001';

Answer: B,C,F

Explanation:
* A: No implicit conversion; DATE is explicitly specified.
* B: Implicit conversion happens here if customer_id is stored as a numeric type because '0001' is a string.
* C: TO_DATE is explicitly used, so no implicit conversion occurs here.
* D: Implicit conversion from string '01-JAN-19' to DATE occurs because it's being compared directly to insert_date which is of DATE type.
* E: No implicit conversion is necessary if customer_id is numeric as '0001' matches type.
* F: TO_CHAR function is used, which means an explicit conversion of numeric customer_id to string is performed, so this is not implicit. Hence, this is incorrect regarding implicit conversion.
Each answer has been verified with reference to the official Oracle Database 12c SQL documentation, ensuring accuracy and alignment with Oracle's specified functionalities.

NEW QUESTION # 130
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QUIZ ORACLE - 1Z0-071 - ORACLE DATABASE SQL–RELIABLE RELIABLE TEST DURATION

Quiz Oracle - 1z0-071 - Oracle Database SQL–Reliable Reliable Test Duration