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Oracle 1z1-071 (Oracle Database SQL) certification exam is designed to test the skills and knowledge of individuals who work with Oracle Database SQL. 1z0-071 exam is intended for database administrators, developers, and anyone else who works with Oracle Database SQL. Those who pass the exam will receive the Oracle Database SQL certification, which demonstrates their proficiency in working with Oracle Database SQL.

Oracle 1z1-071 exam is a computer-based exam that consists of 73 multiple-choice questions. 1z0-071 Exam has a time limit of 100 minutes, and candidates must score at least 63% to pass. 1z0-071 exam is available in several languages, including English, Japanese, and Portuguese.

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Oracle Database SQL Sample Questions (Q267-Q272):

NEW QUESTION # 267
View the Exhibit and examine the structure of the EMPLOYEES and JOB_HISTORY tables. (Choose all that apply.)

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

Answer: C,D

NEW QUESTION # 268
View the exhibit and examine the structure and data in the invoice table. (Choose two.)

Which two SQL statements would execute successfully?

A. SELECT AVG(inv_date) FROM invoice
B. SELECT MAX(inv_date), MIN(cust_id) FROM invoice
C. SELECT AVG( inv_date -SYSDATE), AVG(inv_amt) FROM invoice
D. SELECT MAX(AVG(SYSDATE -inv_date)) FROM invoice

Answer: B,C

NEW QUESTION # 269
Choose two
Examine the description of the PRODUCT DETALS table:

A. PRODUCT_ID can be assigned the PEIMARY KEY constraint.
B. EXPIRY_DATE cannot be used in arithmetic expressions.
C. PRODUCT_NAME cannot contain duplicate values.
D. PRODUCT_PRICE contains the value zero by default if no value is assigned to it.
E. EXPIRY_DATE contains the SYSDATE by default if no date is assigned to it
F. PRODUCT_PRICE can be used in an arithmetic expression even if it has no value stored in it

Answer: A,F

NEW QUESTION # 270
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?

A. invoice_date> '01-02-2019': uses implicit conversion
B. qty_sold ='05549821 ': requires explicit conversion
C. invoice_date = '15-march-2019': uses implicit conversion
D. CONCAT(qty_sold, invoice_date): requires explicit conversion
E. qty_sold BETWEEN '101' AND '110': uses implicit conversion

Answer: A,C

Explanation:
The statements regarding data type conversions and the treatment of literals in SQL expressions involve understanding implicit and explicit data conversions in Oracle SQL.
Statement A is true as invoice_date > '01-02-2019' involves an implicit conversion of the string literal to a date type, based on the NLS_DATE_FORMAT setting, assuming the format matches.
Statement E is true because, similarly to A, invoice_date = '15-march-2019' involves an implicit conversion where the string is automatically converted to a date type according to the Oracle NLS_DATE_FORMAT or an assumed default date format.
Statements B, C, and D involve incorrect or misleading information:
B (qty_sold = '05549821') is misleading and potentially incorrect as leading zeros in a numeric context do not typically require explicit conversion but the presence of spaces might suggest a need for trimming rather than numeric conversion.
C (CONCAT(qty_sold, invoice_date)) would indeed require explicit conversion because CONCAT expects string types, and thus numerical and date values must be explicitly converted to strings before concatenation.
D (qty_sold BETWEEN '101' AND '110') uses implicit conversion where the string literals '101' and '110' are implicitly converted to numbers if qty_sold is a numeric type.

NEW QUESTION # 271
Examine the description of the PRODUCT_ STATUS table:

The STATUS column contains the values IN STOCK or OUT OF STocK for each row.
Which two queries will execute successfully?

A. SELECT prod_id ||q"' s not available" FROM
product_ status WHERE status = 'OUT OF STOCK';
B. SELECT prod_id q's not available" from product_ status WHERE status = 'OUT OF STOCK';
C. SELECT prod_id ||q'(' s not available)' 'CURRENT AVAILABILITY' FROM
product_ status WHERE status = 'OUT OF STOCK'
D. SELECT PROD_ID||q'('s not available)' "CURRENT AVAILABILITY"
FROM product_ status WHERE status = 'OUT OF STOCK';
E. SELECT prod_id "CURRENT AVAILABILITY"||q' ('s not available)' from product_ status WHERE status
= 'OUT OF STOCK';
F. SELECT PROD_ID||q'('s not available)' FROM
product_ status WHERE status = 'OUT OF STOCK';

Answer: D

Explanation:
The || operator is used in Oracle SQL to concatenate strings, and the q quote operator allows you to use alternative quoting mechanisms to avoid conflicts with single quotes within a string.
In options A, B, C, D, E, and F, the q-quote operator is used in different ways to define string literals.
The correct use of the q quote operator requires the format q'[...]', where [...] is the quote delimiter of your choice and can be any single character such as {, [, (, <, or others.
Option D is the correct answer because it follows the correct syntax for the q quote operator and concatenates the literal string correctly with the value of PROD_ID.
Here is the corrected syntax from option D:
SELECT PROD_ID || q'[('s not available)]' "CURRENT AVAILABILITY" FROM product_status WHERE status = 'OUT OF STOCK'; This query will execute successfully and is the only one that correctly uses the q quote operator.

NEW QUESTION # 272
......

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