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Oracle Database SQL Certified Associates are in high demand in the IT industry, with many organizations relying on Oracle databases to store and manage critical data. Passing the Oracle 1z0-071 exam and obtaining the certification demonstrates an individual's expertise in SQL programming language and their ability to manage Oracle databases effectively.

Oracle Database SQL Sample Questions (Q120-Q125):

NEW QUESTION # 120
These are the steps for a correlated subquery, listed in random order:
* The WHERE clause of the outer query is evaluated.
* A candidate row is fetched from the table specified in the outer query.
* This is repeated for the subsequent rows of the table, until all the rows are processed.
* Rows are returned by the inner query, after being evaluated with the value from the candidate row in the outer query.
Which is the correct sequence in which the Oracle server evaluates a correlated subquery?

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

Answer: B

Explanation:
Explanation
http://rajanimohanty.blogspot.co.uk/2014/01/correlated-subquery.html

NEW QUESTION # 121
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?

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

Answer: C

NEW QUESTION # 122
Which two are true about external tables that use the ORACLE _DATAPUMP access driver?

A. Creating an external table creates a directory object.
B. When creating an external table, data can be selected from another external table or from a table whose rows are stored in database blocks.
C. When creating an external table, data can be selected only from a table whose rows are stored in database blocks.
D. Creating an external table creates a dump file that can be used only by an external table in the same database.
E. Creating an external table creates a dump file that can be used by an external table in the same or a different database.

Answer: B

Explanation:
External tables using the ORACLE_DATAPUMP access driver have specific characteristics:
C). Creating an external table using the ORACLE_DATAPUMP access driver allows you to select data from other tables, including another external table or a regular table whose rows are stored in database blocks.
A, B, D, and E are incorrect. Specifically:
* A is incorrect because creating an external table does not automatically create a directory object; the
* directory object must exist prior to or be created separately.
* B is incorrect as it limits the creation to tables stored in database blocks, which is not a restriction.
* D is incorrect because creating an external table does not create a dump file; it reads from an existing dump file created by Data Pump.
* E is also incorrect because the dump file is not created as part of the external table creation process.
References:
* Oracle Database SQL Language Reference, 12c Release 1 (12.1): "CREATE TABLE" for External Tables

NEW QUESTION # 123
You must display details of all users whose username contains the string 'ch_'. (Choose the best answer.) Which query generates the required output?

A. SELECT * FROM users Where user_name LIKE 'ch_%' ESCAPE '_';
B. SELECT * FROM usersWhere user_name LIKE '%ch_%'ESCAPE'%';
C. SELECT * FROM users Where user_name LIKE '%ch_';
D. SELECT * FROM users Where user_name LIKE '%ch_%' ESCAPE '';

Answer: B

NEW QUESTION # 124
View the Exhibit and examine the details of PRODUCT_INFORMATIONtable.

You have the requirement to display PRODUCT_NAMEfrom the table where the CATEGORY_IDcolumn has values 12or 13, and the SUPPLIER_IDcolumn has the value 102088. You executed the following SQL statement:
SELECT product_name
FROM product_information
WHERE (category_id = 12 AND category_id = 13) AND supplier_id = 102088; Which statement is true regarding the execution of the query?

A. It would execute but the output would return no rows.
B. It would not execute because the same column has been used in both sides of the ANDlogical operator to form the condition.
C. It would not execute because the entire WHEREclause condition is not enclosed within the parentheses.
D. It would execute and the output would display the desired result.

Answer: A

NEW QUESTION # 125
......

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100% Pass Trustable Oracle - 1z1-071 Pass4sure Pass Guide

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Oracle Database SQL Sample Questions (Q120-Q125):

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