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최신 Oracle PL/SQL Developer Certified Associate 1z1-071 무료샘플문제 (Q36-Q41):

질문 # 36
View the Exhibit and examine the data in the PROMOTIONStable.

PROMO_BEGIN_DATEis stored in the default date format, dd-mon-rr.
You need to produce a report that provides the name, cost, and start date of all promos in the POST category that were launched before January 1, 2000.
Which SQL statement would you use?
SELECT promo_name, promo_cost, promo_begin_date

A. FROM promotions
WHERE promo_category = 'post' AND promo_begin_date < '01-01-00';
SELECT promo_name, promo_cost, promo_begin_date
B. FROM promotions
WHERE promo_category LIKE '%post%' AND promo_begin_date < '1-JAN-00';
C. FROM promotions
WHERE promo_category LIKE 'P%' AND promo_begin_date < '1-JANUARY-00';
SELECT promo_name, promo_cost, promo_begin_date
D. FROM promotions
WHERE promo_cost LIKE 'post%' AND promo_begin_date < '01-01-2000';
SELECT promo_name, promo_cost, promo_begin_date

정답：B

질문 # 37
The following are the steps for a correlated subquery, listed in random order:
1) The WHERE clause of the outer query is evaluated.
2) The candidate row is fetched from the table specified in the outer query.
3) The procedure is repeated for the subsequent rows of the table, till all the rows are processed.
4) Rows are returned by the inner query, after being evaluated with the value from the candidate row in the outer query. Identify the option that contains the steps in the correct sequence in which the Oracle server evaluates a correlated subquery.

A. 2,1,4,3
B. 4,1,2,3
C. 2,4,1,3
D. 4,2,1,3

정답：C

질문 # 38
View the Exhibit and examine the structure of the PRODUCT_INFORMATION table.

You want to see the product names and the date of expiration of warranty for all the products, if the product is purchased today. The products that have no warranty should be displayed at the top and the products with maximum warranty period should be displayed at the bottom.
Which SQL statement would you execute to fulfill this requirement?

A. SELECT product_name, SYSDATE+warranty_period AS "Warranty expire date"FROM product_informationORDER BY SYSDATE-warranty_period
B. SELECT product_name, SYSDATE+warranty_period AS "Warranty expire date"FROM product_informationWHERE warranty_period > SYSDATE
C. SELECT product_name, SYSDATE+warranty_period AS "Warranty expire date"FROM product_informationORDER BY SYSDATE+warranty_period
D. SELECT product_name, SYSDATE+warranty_period AS "Warranty expire date"FROM product_informationORDER BY SYSDATE

정답：C

질문 # 39
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario? (Choose two.)

A. The ERD must have a M:M relationship between the STUDENTS and PROJECTS entities that must be resolved into 1:M relationships.
B. STUDENT_ID must be the primary key in the STUDENTS entity and foreign key in the PROJECTS entity.
C. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
D. PROJECT_ID must be the primary key in the PROJECTS entity and foreign key in the STUDENTS entity.
E. The ERD must have a 1:M relationship between the STUDENTS and PROJECTS entities.

정답：A,C

설명：
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html

질문 # 40
Examine this description of the EMP table:

You execute this query:
SELECT deptno AS "departments", SUM (sal) AS "salary"
FROM emp
GROUP | BY 1
HAVING SUM (sal)> 3 000;
What is the result?

A. an error
B. only departments where the total salary is greater than 3000, ordered by department
C. all departments and a sum of the salaries of employees with a salary greater than 3000
D. only departments where the total salary is greater than 3000, returned in no particular order

정답：A

설명：
The query uses the syntax GROUP | BY 1 which is not correct. The pipe symbol | is not a valid character in the context of the GROUP BY clause. Additionally, when using GROUP BY with a number, it refers to the position of the column in the SELECT list, which should be written without a pipe symbol and correctly as GROUP BY 1. Since the syntax is incorrect, the database engine will return an error.

질문 # 41
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