Oracle 1z0-071 Exam Questions


Vendor Name: Oracle
Certification Name:Oracle PL
Exam Name:Oracle Database 12c SQL

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Oracle 1z0-071 Exam Questions


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1z0-071 Exam Sample Questions:



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

 

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

 

INSERT statements can insert NULLS explicitly into a column.

 

DELETE statements can remove multiple rows based on multiple conditions.

 

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

 

INSERT INTO…SELECT…FROM statements automatically commit


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


INSERT statements can insert NULLS explicitly into a column.


DELETE statements can remove multiple rows based on multiple conditions.






Which three are true about subqueries?

 

A subquery cannot be used in a from clause.

 

A subquery can be used in a having clause

 

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

 

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

 

A subquery cannot be used in the select list.


A subquery can be used in a having clause


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


A subquery cannot be used in the select list.






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

 

A sequence can issue duplicate values

 

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

 

Sequences can always have gaps

 

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

 

A sequence can only be dropped by a DBA


A sequence can issue duplicate values


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


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






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.

 

ORDER BY 2. cust _id

 

ORDER BY 2,

 

ORDER BY "CUST^NO

 

ORDER BY "Last Name

 

ORDER BY CUST_NO


ORDER BY 2. cust _id


ORDER BY 2,


ORDER BY "Last Name






Which statement is true about aggregate functions?

 

The AVG function implicitly converts NULLS to zero.

 

Aggregate functions can be nested to any number of levels.

 

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

 

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


Aggregate functions can be nested to any number of levels.




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