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Oracle 1z0-071 Practice Test Questions ( Updated) – Real Exam Questions & Dumps PDF

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Oracle 1z0-071 Sample Questions – Free Practice Test & Real Exam Prep

Question #1

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
F. A sequence number that was allocated can be rolled back if a transaction fails

Question #2

The CUSTOMERS table has a CUST_LAST_NAME column of data type VARCHAR2.The table has two rows whose CUST_LAST_NAME values are Anderson and Ausson.Which query produces output for CUST_LAST_NAME containing Oder for the first row and Aus for the second?

A. SELECT REPLACE (TRIM(TRAILING ‘son’ FROM cust_last_name), ‘An’, ‘o’) FROM customers;
B. SELECT INITCAP (REPLACE(TRIM(‘son’ FROM cust_last_name), ‘An’, ‘o’)) FROM customers;
C. SELECT REPLACE (SUBSTR(cust_last_name, -3), ‘An’, ‘o’) FROM customers;
D. SELECT REPLACE (REPLACE(cust_last_name, ‘son’, ‘’), ‘An’, ‘o’) FROM customers;

Question #3

Which three actions can you perform by using the ALTER TABLE command?

A. Lock a set of rows in a table.
B. Drop pseudocolumns from a table.
C. Rename a table.
D. Drop all columns simultaneously from a table.
E. Enable or disable constraints on a table.
F. Restrict all DML statements on a table.

Question #4

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

A. Savepoints may be used to ROLLBACK.
B. Savepoints can be used for only DML statements.
C. Savepoints are effective only for COMMIT.
D. Savepoints are effective for both COMMIT and ROLLBACK.
E. Savepoints can be used for both DML and DDL statements.

Question #5

Which three statements are true about inner and outer joins?

A. Outer joins can be used when there are multiple join conditions on two tables.
B. Outer joins can only be used between two tables per query.
C. A full outer join returns matched and unmatched rows.
D. An inner join returns matched rows.
E. A full outer join must use Oracle syntax.
F. A left or right outer join returns only unmatched rows.

Question #6

Which three statements are true about performing Data Manipulation Language (DML) operations on a view with no INSTEAD OF triggers defined? (Choose three.)

A. Insert statements can always be done on a table through a view.
B. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values which are not referenced in the defining query of the view.
C. Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.
D. Delete statements can always be done on a table through a view.
E. The WITH CHECK clause has no effect when deleting rows from the underlying table through the view.
F. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.

Question #7

Which three statements are true about dropping and unused columns in an Oracle database?

A. Partition key columns cannot be dropped.
B. A column that is set to unused still counts towards the limit of 1000 columns per table.
C. An unused column's space is reclaimed automatically when the row containing that column is next queried.
D. A drop column command can be rolled back.
E. A primary key column referenced by another column as a foreign key can be dropped if using the cascade option.
F. An unused column's space is reclaimed automatically when the block containing that column is next queried.

Question #8

Which three statements are true about GLOBAL TEMPORARY TABLES?

A. A GLOBAL TEMPORARY TABLE can have multiple indexes.
B. A GLOBAL TEMPORARY TABLE cannot have a PUBLIC SYNONYM.
C. A trigger can be created on a GLOBAL TEMPORARY TABLE.
D. A GLOBAL TEMPORARY TABLE can be referenced in the defining query of a view.
E. A GLOBAL TEMPORARY TABLE can have only one index..
F. Data Manipulation Language (DML) on GLOBAL TEMPORARY TABLES generates no REDO

Question #9

Which two statements are true about the SET VERIFY ON command? (Choose two.)

A. It can be used in SQL Developer and SQL*Plus
B. It displays values for variables used only in the WHERE clause of a query
C. It can be used only in SQL*Plus
D. It displays values for variables prefixed with &&
E. It displays values for variables created by the DEFINE command

Question #10

Which three actions can you perform on an existing table containing data? (Choose three.)

A. Add a new NOT NULL column with a DEFAULT value
B. Change the default value of a column
C. Change a DATE column containing data to a NUMBER data type
D. Add a new column as the table’s first column
E. Define a default value that is automatically inserted into a column containing nulls
F. Increase the width of a numeric column

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