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Oracle 1z1-071: Oracle Database SQL exam is designed to test the skills and knowledge of candidates in using SQL to manage and manipulate data in Oracle databases. 1z1-071 exam is intended for professionals who work with Oracle databases and want to enhance their SQL skills. Passing the 1z1-071 Exam is a requirement to earn the Oracle Database SQL certification.

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Oracle Database SQL Sample Questions (Q244-Q249):

NEW QUESTION # 244
You execute this command:

Which two are true?

A. A ROLLBACK statement can be used to retrieve the deleted data.
B. It retains the indexes defined on the table.
C. A FLASHBACK TABLE statement can be used to retrieve the deleted data.
D. It always retains the space used by the removed rows.
E. It drops any triggers defined on the table.
F. It retains the integrity constraints defined on the table.

Answer: B,F

NEW QUESTION # 245
View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index-organized table. (Choose two.)

Evaluate this SQL statement:
ALTER TABLE emp
DROP COLUMN first_name;
Which two statements are true?

A. The FIRST_NAME column would be dropped provided it does not contain any data.
B. The drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is added to the SQL statement.
C. The FIRST_NAME column would be dropped provided at least one column remains in the table.
D. The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY provided the CASCADE option is added to the SQL statement.

Answer: C

NEW QUESTION # 246
Which statement is true about an inner join specified in a query's WHERE clause?

A. It applies for equijoin and nonequijoin conditions.
B. It must have primary-key and foreign-key constraints defined on the join columns.
C. It requires column names to be the same in all tables being joined.
D. It only applies for equijoin conditions.

Answer: A

NEW QUESTION # 247
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? (Choose two.)

A. invoice_date = '15-march-2019' : uses implicit conversion
B. invoice_date > '01-02-2019' : uses implicit conversion
C. qty_sold = '0554982' : requires explicit conversion
D. CONCAT(qty_sold, invoice_date) : requires explicit conversion
E. qty_sold BETWEEN '101' AND '110' : uses implicit conversion

Answer: A,E

NEW QUESTION # 248
You execute this query:

What is the result?

A. It generates an error.
B. It returns the date for the last Monday of the current month.
C. It returns the date for the first Monday of the next month.
D. It executes successfully but does not return any result.

Answer: C

NEW QUESTION # 249
......

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