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Latest 1z0-071 Exam Questions


Question # 1



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

A.

UPDATE statements can have different subqueries to specify the values for each updated column.

B.

INSERT statements can insert NULLS explicitly into a column.

C.

DELETE statements can remove multiple rows based on multiple conditions.

D.

DML statements require a primary key be defined on a table.

E.

INSERT INTO…SELECT…FROM statements automatically commit




A.
  

UPDATE statements can have different subqueries to specify the values for each updated column.




B.
  

INSERT statements can insert NULLS explicitly into a column.




C.
  

DELETE statements can remove multiple rows based on multiple conditions.







Question # 2



Which three are true about subqueries?

A.

A subquery cannot be used in a from clause.

B.

A subquery can be used in a having clause

C.

< ANY returns true If the argument is less than the highest value returned by the subquery.

D.

= ANY can only evaluate the argument against a subquery If it returns two or more values.

E.

A subquery cannot be used in the select list.




B.
  

A subquery can be used in a having clause




C.
  

< ANY returns true If the argument is less than the highest value returned by the subquery.




E.
  

A subquery cannot be used in the select list.







Question # 3



Which three statements are true about sequences in a single instance Oracle database? (Choose three.)

A.

A sequence can issue duplicate values

B.

A sequence’s unallocated cached value are lost if the instance shuts down

C.

Sequences can always have gaps

D.

Two or more tables cannot have keys generated from the same sequence

E.

A sequence can only be dropped by a DBA




A.
  

A sequence can issue duplicate values




B.
  

A sequence’s unallocated cached value are lost if the instance shuts down




D.
  

Two or more tables cannot have keys generated from the same sequence







Question # 4



Examine this statement:
SELECT cust_id, cust^last_ndma "Last Name"
FROM customers
WHERE country_id — 10 UNION
SELECT cust_ID_CUST_NO, cust_last_name
PROM customers
WHERE country__id = 30
Identify three order by clauses, any one of which will complete the query successfully.

A.

ORDER BY 2. cust _id

B.

ORDER BY 2,

C.

ORDER BY "CUST^NO

D.

ORDER BY "Last Name

E.

ORDER BY CUST_NO




A.
  

ORDER BY 2. cust _id




B.
  

ORDER BY 2,




D.
  

ORDER BY "Last Name







Question # 5



Which statement is true about aggregate functions?

A.

The AVG function implicitly converts NULLS to zero.

B.

Aggregate functions can be nested to any number of levels.

C.

The MAX and MIN functions can be used on columns with character data types.

D.

Aggregate functions can be used in any clause of a SELECT statement.




B.
  

Aggregate functions can be nested to any number of levels.







Question # 6



In which normal form is a table, if it has no multi-valued attributes and no partial dependencies?

A.

second normal form

B.

first normal form

C.

third normal form

D.

fourth normal form




A.
  

second normal form



Explanation
https://blog.udemy.com/database-normal-forms/





Question # 7



Examine this query:
SELECT SUBSTR (SYSDATE, 1, 5) ''Result '' FROM DUAL;
Which statement Is true?

A.

It falls unless the expression is modified to substr (tociiar (Trunc (svsdate) ) , 1, 5).

B.

It fails unless the expression is modified to to_char (Substr (sysdate, 1, 5) ) .

C.

It fails unless the expression is modified to substr (to_char (sysdate) , 1, 5S).

D.

It executes successfully with an implicit data type conversion.




D.
  

It executes successfully with an implicit data type conversion.







Question # 8



Which two statements are true about Oracle databases and SQL?

A.

A user can be the owner of multiple schemas In the same database.

B.

The database guarantees read consistency at select level on user-created tables.

C.

Updates performed by a database user can be rolled back by another user by using the rollback
command.

D.

A query can access only tables within the same schema.

E.

When you execute an update statement, the database Instance locks each updated row.




B.
  

The database guarantees read consistency at select level on user-created tables.




E.
  

When you execute an update statement, the database Instance locks each updated row.







Question # 9



Which two statements are true regarding the COUNT function? (Choose two.)

A.

A SELECT statement using the COUNT function with a DISTINCT keyword cannot have a WHERE
clause.

B.

COUNT(DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and
NULLs in the INV_AMT column.

C.

COUNT(inv_amt) returns the number of rows in a table including rows with NULL in the INV_AMT
column.

D.

COUNT(*) returns the number of rows including duplicate rows and rows containing NULL value in
any column.

E.

It can only be used for NUMBER data types.




B.
  

COUNT(DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and
NULLs in the INV_AMT column.




D.
  

COUNT(*) returns the number of rows including duplicate rows and rows containing NULL value in
any column.







Question # 10



The ORDERS table has a primary key constraint on the ORDER_ID column.
The ORDER_ITEMS table has a foreign key constraint on the ORDER_ID column, referencing the primary
key of the ORDERS table.
The constraint is defined with ON DELETE CASCADE.
There are rows in the ORDERS table with an ORDER_TOTAL of less than 1000.
Which three DELETE statements execute successfully?

A.

DELETE order_id FROM orders WHERE order_total < 1000;

B.

DELETE FROM orders WHERE order_total < 1000;

C.

DELETE orders WHERE order_total < 1000;

D.

DELETE * FROM orders WHERE order_total < 1000;

E.

DELETE FROM orders;




A.
  

DELETE order_id FROM orders WHERE order_total < 1000;




C.
  

DELETE orders WHERE order_total < 1000;






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Oracle 1z0-071 Dumps - Latest Questions


Exam Code: 1z0-071
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