Latest Oracle 1z0-071 Exam Questions For Free – (Jan-2018 dumps)

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1z0-071 exam questions, 1z0-071 PDF dumps; 1z0-071 exam dumps:: https://www.dumpsschool.com/1z0-071-exam-dumps.html (83 Q&A) (New Questions Are 100% Available! Also Free Practice Test Software!)

Latest and Most Accurate Oracle 1z0-071 Dumps Exam Questions and Answers:

Version: 7.0
Question: 21

Which three statements are true about the ALTER TABLE —-DROP COLUMN …..command?

A. A column can be dropped only if it does not contain any data.
B. A column can be dropped only if another column exists in the table.
C. A dropped column can be rolled back.
D. The column in a composite PRIMARY KEY with the CASCADE option can be dropped.
E. A parent key column in the table cannot be dropped.

Answer: C

Question: 22

View the Exhibit and examine the description of the PRODUCT_INFORMATION table.
Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?

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

Answer: C

Question: 23

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Which statement is true regarding external tables?

A. The default REJECT LIMIT for external tables is UNLIMITED.
B. The data and metadata for an external table are stored outside the database.
C. ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.
D. The CREATE TABLE AS SELECT statement can be used to unload data into a regular table in the database from an external table.

Answer: D

Question: 24

Which two statements are true about Data Manipulation Language (DML) statements?

A. AH INSERT INTO…VALUES.. statement can add multiple rows per execution to a table.
B. An UPDATE…SET… statement can modify multiple rows based on multiple conditions on a table.
C. A DELETE FROM ….. statement can remove rows based on only a single condition on a table.
D. An INSERT INTO…VALUES….. statement can add a single row based on multiple conditions on a table.
E. A DELETE FROM….. statement can remove multiple rows based on multiple conditions on a table.
F. An UPDATE…SET…. statement can modify multiple rows based on only a single condition on a table.

Answer: AC

Question: 25

Which two statements are true regarding roles? (Choose two.)

A. A role can be granted to itself.
B. A role can be granted to PUBLIC.
C. A user can be granted only one role at any point in time.
D. The REVOKE command can be used to remove privileges but not roles from other users.
E. Roles are named groups of related privileges that can be granted to users or other roles.

Answer: B, E

Question: 26

Which two statements are true regarding constraints? (Choose two.)

A. A foreign key cannot contain NULL values.
B. A column with the UNIQUE constraint can contain NULL.
C. A constraint is enforced only for the INSERT operation on a table.
D. A constraint can be disabled even if the constraint column contains data.
E. All the constraints can be defined at the column level as well as the table level

Answer: B,D

         

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