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Oracle 1z0-071 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Oracle Database SQL
Exam Number:	1z0-071
Real Exam Qty:	70
Passing Score:	63%
Available Languages:	Japanese, Simplified Chinese, English, Portuguese, Korean
Certificate Validity Period:	No expiration for this exam/certification
Related Certifications:	Oracle Database SQL Certified Associate Oracle Database Administrator Certified Associate (DBA)
Exam Price:	$245 USD
Exam Duration:	120 minutes
Exam Format:	Multiple Choice
Sample Questions:	Oracle 1z0-071 Sample Questions
Exam Way:	Pearson VUE testing center (online proctored option available)
Pre Condition:	No formal prerequisites required, but basic knowledge of relational database concepts is recommended
Official Syllabus URL:	https://education.oracle.com/oracle-database-sql-exam

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Detailed 1z0-071 Study Dumps | Latest 1z0-071 Exam Question

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Oracle Database SQL Sample Questions (Q428-Q433):

NEW QUESTION # 428
View the exhibit and examine the structure of the CUSTOMERStable.

Which two tasks would require subqueries or joins to be executed in a single statement?

A. finding the number of customers, in each city, whose credit limit is more than the average credit limit of all the customers
B. listing of those customers, whose credit limit is the same as the credit limit of customers residing in the city 'Tokyo'.
C. finding the number of customers, in each city, whose marital status is 'married'.
D. listing of customers who do not have a credit limit and were born before 1980
E. finding the average credit limit of male customers residing in 'Tokyo'or 'Sydney'

Answer: A,B

NEW QUESTION # 429
Which two are true about constraints?

A. A constraint can be disabled even if the constrained column contains data.
B. A column with a foreign key constraint can never contain a null value.
C. All constraints can be defined at the table or column level.
D. A column with a UNIQUE constraint can contain a NULL value.
E. Constraints are enforced only during INSERT operations.

Answer: A,D

Explanation:
A; False. Constraints are enforced during INSERT and UPDATE operations, and by the nature of their definition, they impact DELETE operations as well (in the case of referential constraints).
B: False. A column with a foreign key constraint can contain a NULL value unless it is also constrained to be NOT NULL.
C: False. Not all constraints can be defined at the column level. For example, some constraints such as FOREIGN KEY constraints are more commonly defined at the table level.
D: True. A constraint can be disabled regardless of whether the constrained column contains data. However, re-enabling the constraint requires that all data satisfy the constraint rules.
E; True. A column with a UNIQUE constraint can indeed contain a NULL value, as NULL is considered not equal to any value, including itself. This means that multiple rows with NULL values do not violate the UNIQUE constraint.
References:
* Oracle Documentation on Constraints:
https://docs.oracle.com/database/121/SQLRF/clauses002.htm#SQLRF52271
* Oracle Documentation on Enabling and Disabling Constraints:
https://docs.oracle.com/database/121/ADMIN/clustrct.htm#ADMIN13508

NEW QUESTION # 430
View the Exhibit and examine the structure of the EMPLOYEES and JOB_HISTORY tables.

Examine this query which must select the employee IDs of all the employees who have held the job SA_MAN at any time during their employment.
SELECT EMPLOYEE_ID
FROM EMPLOYEES
WHERE JOB_ID = 'SA_MAN'
-------------------------------------
SELECT EMPLOYEE_ID
FROM JOB_HISTORY
WHERE JOB_ID = 'SA_MAN';
Choose two correct SET operators which would cause the query to return the desired result.

A. UNION ALL
B. INTERSECT
C. UNION
D. MINUS

Answer: A,C

NEW QUESTION # 431
View the exhibit and examine the structure of the PROMOTIONStable.

You have to generate a report that displays the promo name and start date for all promos that started after the last promo in the 'INTERNET' category.
Which query would give you the required output?
SELECT promo_name, promo_begin_date FROM promotions

A. WHERE promo_begin_date> ALL (SELECT MAX (promo_begin_date)
FROM promotions) AND
promo_category= 'INTERNET';
B. SELESELECT promo_name, promo_begin_date FROM promotions
WHERE promo_begin_date IN (SELECT promo_begin_date
FROM promotions
WHERE promo_category= 'INTERNET');
SELECT promo_name, promo_begin_date FROM promotions
C. WHERE promo_begin_date > ALL (SELECT promo_begin_date
FROM promotions
WHERE promo_category = 'INTERNET');
SELECT promo_name, promo_begin_date FROM promotions
D. WHERE promo_begin_date> ANY (SELECT promo_begin_date
FROM promotions
WHERE promo_category= 'INTERNET');

Answer: C

Explanation:
Explanation

NEW QUESTION # 432
View the exhibit and examine the description of the PRODUCT_INFORMATIONtable.

Which SQL statement would retrieve from the table the number of products having LIST_PRICEas NULL?
SELECT COUNT (DISTINCT list_price)

A. FROM product_information
WHERE list_price is NULL
SELECT COUNT (NVL(list_price, 0))
B. FROM product_information
WHERE list_price i= NULL
SELECT COUNT (list_price)
C. FROM product_information
WHERE list_price is NULL
SELECT COUNT (list_price)
D. FROM product_information
WHERE list_price is NULL

Answer: C

NEW QUESTION # 433
......

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